phosphorus 5 oxide

Reaction with water: At first glance, magnesium oxide powder does not appear to react with water. Molecular Weight 153.33 . It continues the trend of the highest oxides of the Period 3 elements towards being stronger acids. the Blast Furnace extraction of iron, calcium oxide from limestone reacts with silicon dioxide to produce a liquid slag, calcium silicate: information contact us at info@libretexts.org, status page at https://status.libretexts.org. Therefore, the negative ion formed not very stable, and readily reclaims its proton to revert to the acid. In the first reaction, only one of the protons reacts with the hydroxide ions from the base. White phosphorus catches fire spontaneously in air, burning to make smoke of phosphorus (V) oxide. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Phosphorus can even form the PF 6-ion, in which there are 12 valence electrons on the central atom, as shown in the figure below. The acid reacts with water to give a hydronium ion (a hydrogen ion in solution) and a hydrogen sulfate ion. This reaction is more appropriately described as an equilibrium: \[ HSO_4^- (aq) + H_2O \rightleftharpoons H_3O^+ (aq) + SO_4^{2-} (aq)\]. J … Reaction with water: Aluminum oxide is insoluble in water and does not react like sodium oxide and magnesium oxide. Phosphorus(V) oxide is also a white solid, subliming (turning straight from solid to vapour) at 300°C. In Encyclopedia of Reagents for Organic Synthesis; Pacquette, L., Ed. ; J. Wiley & Sons, New York, 2004. ProChem owner acquires ChemFree Defoam, LLC. D 22Dg A 1.1g B 5.5g 11.0g O5P2. mu-oxido-bis(hydridodioxidophosphate)(2-) [O2P(H)OP(H)(O)2](2-) FT-0697548. Sulfur dioxide also reacts directly with bases such as sodium hydroxide solution. However, with the numeral (V) behind its trying to … Reacts with P 2 O 5 to give trimethylsilyl polyphosphate ('PPSE'), a milder and more convenient dehydrating agent then polyphosphoric acid. Phosphorus(III) oxide has the formula P2O3 but it exists as the molecule of P4O6. Detailed Safety and Handling Information can be found on our Safety Data Sheet (SDS). It does not enter the silica chain in the matrix. Sodium hydroxide - diluted solution. Reaction with bases: Silicon dioxide reacts with hot, concentrated sodium hydroxide solution, forming a colorless solution of sodium silicate: \[SiO_2 + 2NaOH \rightarrow Na_2SiO_3 + H2O\]. This page discusses the reactions of the oxides of Period 3 elements (sodium to chlorine) with water, and with acids or bases where relevant (as before, argon is omitted because it does not form an oxide). Sulfuric acid displays all the reactions characteristic of a strong acid. Pure phosphorus, however, can be deadly. Phosphorus(III) oxide: Phosphorus(III) oxide reacts with cold water to produce a solution of the weak acid, H3PO3—known as phosphorous acid, orthophosphorous acid or phosphonic acid: The fully-protonated acid structure is shown below: The protons remain associated until water is added; even then, because phosphorous acid is a weak acid, few acid molecules are deprotonated. What is the quantity of phosphorus required to produce 55 kg of phosphorus (V) oxide? It has reactions as both a base and an acid. Phosphorus pentoxide is a more complex molecular oxide with a deceptive name, the real formula being P 4 O 10. The halogens and oxygen will oxidize phosphorus. In its acid form, molecule has three acidic -OH groups, which can cause a three-stage reaction with sodium hydroxide: \[ NaOH + H_3PO_4 \rightarrow NaH_2PO_4 + H_2O\], \[ 2NaOH + H_3PO_4 \rightarrow Na_2HPO_4 + 2H_2O\], \[ 3NaOH + H_3PO_4 \rightarrow Na_3PO_4 + 3H_2O\]. Neutral chloric(VII) acid has the following structure: When the chlorate(VII) ion (perchlorate ion) forms by loss of a proton (in a reaction with water, for example), the charge is delocalized over every oxygen atom in the ion. Meier, M. S. Phosphorus(V) Oxide. CHEBI:29262. Thus, phosphorus can react with fluorine to form both PF 3 and PF 5. See Answer. Phosphorus(V) oxide is a white flocculent powder that can be prepared by heating elemental phosphorus in excess oxygen. Check out a sample Q&A here. This time the fully protonated acid has the following structure: Phosphoric(V) acid is another weak acid with a pKa of 2.15, marginally weaker than phosphorous acid. The structure of chloric(I) acid is exactly as shown by its formula, HOCl. Reacts with P 2 O 5 to give trimethylsilyl polyphosphate ('PPSE'), a milder and more convenient dehydrating agent then polyphosphoric acid. Reaction with acids: As a strong base, sodium oxide also reacts with acids. Therefore, there are two possible reactions with a base like sodium hydroxide, depending on the amount of base added: \[ NaOH + H_3PO_3 \rightarrow NaH_2PO_3 + H_2O\], \[ 2NaOH + H_3PO_3 \rightarrow Na_2HPO_3 + 2H_2O\]. Chlorine(VII) oxide reacts with water to give the very strong acid, chloric(VII) acid, also known as perchloric acid. -P 2 O 5 is a glass network former like boric oxide and silicon dioxide. Sulfur dioxide: Sulfur dioxide is fairly soluble in water, reacting to give a solution of sulfurous acid (also known as sulfuric(IV) acid), H2SO3, as shown in the reaction below. Chloric(VII) acid reacts with sodium hydroxide solution to form a solution of sodium chlorate(VII): \[ NaOH + HClO_4 \rightarrow NaClO_4 + H2O\]. calcined cattle bones).-Phosphoric oxide is normally present in only trace amounts in ceramic materials.-It can act as a melter in middle to high fire, but its power-per-unit-added drops drastically beyond 5% additions. The oxides: The oxides of interest are given below: The trend in acid-base behavior can be summarized as follows: Acidity increases from left to right, ranging from strongly basic oxides on the left to strongly acidic ones on the right, with an amphoteric oxide (aluminum oxide) in the middle. Only one acid is commonly considered, phosphoric (V) acid, H 3 PO 4 (also known as phosphoric acid or as orthophosphoric acid). 0. reply. Meier, M. S. Phosphorus(V) Oxide. …as optical glasses) based on phosphorus pentoxide (P 2 O 5) are highly resistant to hydrofluoric acid and act as efficient heat absorbers when iron oxide is added. Its chemical formula is P 4 O 10. Trampmaster90 Badges: 2. Chlorine(VII) oxide: Chlorine(VII) oxide is the highest oxide of chlorine—​the chlorine atom is in its maximum oxidation state of +7. Serum phosphorus is measured in milligrams of phosphorus per deciliter of blood (mg/dL). Unless otherwise noted, LibreTexts content is licensed by CC BY-NC-SA 3.0. In fact, the hydrogen sulfate ion is a relatively weak acid, similar in strength to the acids discussed above. For other quantities or purities not listed, please request a quotation. \[Na_2O + 2HCl \rightarrow 2NaCl + H_2O\]. UNII-0LTR52K7HK. Phosphorus(V) oxide: Phosphorus(V) oxide reacts violently with water to give a solution containing a mixture of acids, the nature of which depends on the reaction conditions. Aluminum oxide reacts with hot, concentrated sodium hydroxide solution to produce a colorless solution of sodium. Phosphorus(V) oxide. Dropping P 4 O 10 into water produces a hissing sound, heat, and orthophosphoric acid: Phosphorus oxide (P2O5) Diphosphonic acid dianion. This is possible because the electronegativity difference between aluminum and oxygen is small, unlike the difference between sodium and oxygen, for example (electronegativity increases across a period). silicon oxide - This does not exist. For example, it reacts with warm dilute hydrochloric acid to give magnesium chloride solution. *Please select more than one item to compare Its chemical formula is P4O10. It sometimes referred to as diphosphorus pentoxide, phosphoric anhydride, and tetra phosphorus decoxide. Only one acid is commonly considered, phosphoric(V) acid, H 3 PO 4 (also known as phosphoric acid or as orthophosphoric acid). Reaction with water: Silicon dioxide does not react with water, due to the thermodynamic difficulty of breaking up its network covalent structure. example of acidic silicon dioxide reacting with a base. Phosphorus has two common oxides, phosphorus(III) oxide, P 4 O 6, and phosphorus(V) oxide, P 4 O 10.. Phosphorus(III) oxide: Phosphorus(III) oxide is a white solid, melting at 24°C and boiling at 173°C.To understand its structure, consider a tetrahedral P 4 molecule:. Phosphorous acid has a pKa of 2.00, which is more acidic than common organic acids like ethanoic acid (pKa = 4.76). Rep:? Two oxides are considered: sulfur dioxide, SO2, and sulfur trioxide, SO3. Phosphorus pentoxide (phosphorus(V) oxide, phosphoric anhydride), P 2 O 5; Phosphorus trioxide (phosphorus(III) oxide, phosphorous anhydride), P 2 O 3; Several other, less common, oxides of phosphorus, including P 4 O 7, P 4 O 8, P 4 O 9, PO and P 2 O 6 Phosphorus monoxide; Phosphorus tetroxide The oxide ions are held too strongly in the solid lattice to react with the water. Phosphorus pentoxide, which is the anhydride form of phosphoric acid (H3PO4), has the empirical chemical formula P2O5. Chlorine(I) oxide: Chlorine(I) oxide is far less acidic than chlorine(VII) oxide. Chlorine(I) oxide also reacts directly with sodium hydroxide to give the same product: \[2NaOH + Cl_2O \rightarrow 2NaOCl + H_2O\]. This reaction runs essentially to completion: \[ H_2SO_4 (aq) + H_2O (l) \rightarrow H_3P^+ + HSO_4^- (aq)\]. In magnesium oxide, the attractions are between 2+ and 2- ions. A concentrated solution of sodium oxide in water will have pH 14. Copyright © 2021 ProChem, Inc® International. The second proton is more difficult to remove. Bismuth is a brittle crystalline which is slightly pinkish in its elemental form. Phosphorus, however, has empty 3d atomic orbitals that can be used to expand the valence shell to hold 10 or more electrons. Remove contact lenses, if present and easy to do. 0. reply. A series of phosphorus modified HZSM-5 (SiO 2 /Al 2 O 3 = 25, P/Al = 0.5, 1.0, 1.5, 2.0) samples were prepared and tested in the isomerization of styrene oxide to phenylacetaldehyde under a gas-phase atmosphere free of solvents. phosphorus oxide - There are several phosphorus oxides. phosphate glass. 4P(s) + 302(g) → 2P2O3(s) Which mass of phosphorus(III) oxide is produced from 6.2g of phosphorus? Phosphorus(V) oxychloride 99.999% Synonym: Phosphorus(V) oxide chloride, Phosphoryl chloride CAS Number 10025-87-3. Sodium oxide is a simple strongly basic oxide. If instead phosphorus(III) oxide is reacted directly with sodium hydroxide solution, the same salts are possible: \[4NaOH + P_4O_6 + 2H_2O \rightarrow 4NaH_2PO_3\], \[9NaOH + P_4O_6 \rightarrow 4Na_2HPO_3 + 2H_2O\]. Compare Products: Select up to 4 products. ome magnesium hydroxide is formed in the reaction, but as the species is almost insoluble, few hydroxide ions actually dissolve. Have questions or comments? Phosphorus oxide, also known as phosphorus pentoxide, is a chemical compound. Phosphoric glass tends to show as a bluish flush in glazes. The reaction is shown below: Reaction with acids: Magnesium oxide reacts with acids as predicted for a simple metal oxide. P4O10 + 6H2O → 4H3PO4 The pattern is less clear for other oxides. Diphosphorus trioxide. Phosphorus (V) pentoxide. A reasonably concentrated solution of sulfurous acid has a pH of about 1. It reacts with water to some extent to give chloric(I) acid, \(HOCl^-\) also known as hypochlorous acid. It seems Phosphorus is group 5, which means non-metal. More than 250,000 words that aren't in our free dictionary The structure of P 4 O 6 is like that of P 4 O 10 without the terminal oxide groups. MFCD00011440. magnesium oxide - This is a basic oxide. The protonated acid has the following structure: Sulfurous acid is also a relatively weak acid, with a pKa of around 1.8, but slightly stronger than the two phosphorus-containing acids above. \[ Cl_2O + H_2O \rightleftharpoons 2HOCl\]. Phosphorus trioxide. There are about 750 grams of phosphorus in the average adult. Do NOT induce vomiting. Magnesium oxide is another simple basic oxide, which also contains oxide ions. Quartz has many different structures - see the link below. All rights reserved. Describing the properties of aluminum oxide can be confusing because it exists in a number of different forms. The P 4 O 10 molecule is the acid anhydride of orthophosphoric acid, H 3 PO 4. Calcitonin gene-related peptide functions as a vasodilator while katacalcin is a calcium-lowering peptide. Phosphorus(III) oxide, P 4 O 6 (also called tetraphosphorus hexoxide) is the anhydride of P(OH) 3, the minor tautomer of phosphorous acid. One of those forms is very unreactive (known chemically as alpha-Al2O3) and is produced at high temperatures. Therefore, because silicon dioxide does not contain oxide ions, it has no basic properties. Watch the recordings here on Youtube! The LibreTexts libraries are Powered by MindTouch® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Silicon is too similar in electronegativity to oxygen to form ionic bonds. As a new method of forming phosphoric acid was discovered, this method fell out of fashion. The more common examples: ruthenium tetroxide, osmium tetroxide, and xenon tetroxide. Reaction with water: Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution. It is very stable and is a poor oxidizing agent. It contains phosphorus and oxide ions. #5 Report Thread starter 11 years ago #5 hey thanks all for the help and info, my board is edexcel or should I … Trampmaster90 Badges: 2. It follows that more double bonded oxygen atoms in the ion make more delocalization possible; more delocalization leads to greater stability, making the ion less likely to recombine with a hydrogen ion and revert to the non-ionized acid. Reaction with acids: Aluminum oxide contains oxide ions, and thus reacts with acids in the same way sodium or magnesium oxides do. Tetroxides are rare. aluminium oxide - This is quite insoluble and might be very slightly basic. This is basically indicating that the oxidation state of the central P atom is +5. \[ SO_2 + 2NaOH \rightarrow Na_2SO_3 + H_2O\]. phosphorus (V) oxide is an acidic oxide and sodium hydroxide is a base... acid + base --> salt + water the question is testing your knowledge of oxides. It has no doubly-bonded oxygens, and no way of delocalizing the charge over the negative ion formed by loss of the hydrogen. Picture of reaction: The two common methods for preparing orthophosphoric acid, H 3 PO 4, are either the reaction of a phosphate with sulfuric acid or the reaction of water with phosphorus(V) oxide. Phosphorus (V) Oxide: Synonyms: Phosphorus pentoxide, Diphosphorus pentoxide, Phosphorus anhydride: Formula: P2O5: Purity: 99.998%: CAS Number: 1314-56-3: Molecular Weight: 141.94: Color & Form: White powder: Boiling Point: 360° C (subl.) Phosphorus oxide definition is - an oxide of phosphorus: such as. \[Al_2O_3 + 6HCl \rightarrow 2AlCl_3 + 3H_2O\]. Chemical Name: Phosphorus Pentoxide Synonyms: Diphosphorus Pentoxide, Phosphoric Anhydride, Phosphorus(V) Oxide Chemical Formula: P2O5 Molecular Formula: P4O10 CAS Number: 1314-56-3 CAS Number (P4O10): 16752-60-6 EC Number: 215-236-1 ZINC242728172. For examples, and related reagents, see Phosphorus(V)­ oxide, A13348. " Solid phosphorus(V) oxide exists in several different forms - some of them polymeric. UNII-0LTR52K7HK. Write the reaction equation for the reaction of phosphorus with oxygen to form phosphorus oxide. If it burns in a little air, it produces poisonous phosphorus (III) oxide. Diphosphorus trioxide. That makes the ion very stable, making chloric(VII) acid very strong. This reaction and others display the amphoteric nature of aluminum oxide. Solutions of each of these acids with concentrations around 1 mol dm-3 have a pH of about 1. Chlorine forms several oxides, but only two (chlorine(VII) oxide, Cl2O7, and chlorine(I)oxide, Cl2O) are considered here. Find another reaction. In this case, the phosphorus uses all five of its outer electrons in the bonding. Nerve conduction, because silicon dioxide does not react like sodium oxide in and... Difficulty of breaking up its network covalent structure in Encyclopedia of reagents for Organic Synthesis ; Pacquette phosphorus 5 oxide... The attractions are between 2+ and 2- ions, if present and easy to do, one! Found on our Safety Data Sheet ( SDS ) ( VII ) acid is exactly as by! Oxide ( P2O3 ) 1314-24-5 magnesium oxide, A13348. also unlikely to be reacted directly a! More reactive forms of the highest oxides of the molecule the table of some typical commercial glasses. Comparatively hard to find case ( using twice as much sodium hydroxide ), and any attempt to isolate gives... - some of them polymeric acidic silicon dioxide does not contain oxide ions, and any to! Is more acidic than chlorine ( I ) acid very strong that P. Ion is a white powder that is composed of 4 phosphorus ( I ) silica chain in the adult! Milligrams of phosphorus ( P ) atoms and 10 oxygen ( O ) atoms 10! ( mg/dL ) oxides of the central P atom is not regulation and acts to regulate phosphorus.!, making chloric ( I ) oxide is also known as phosphorus pentoxide, diphosphorus pentoxide, also... That you find on this page as well or magnesium oxides do solution. Oxide definition is - an oxide of phosphorus ( III ) oxide as dichlorine,! [ which has 10 … H314 Causes severe skin burns and eye damage solution about. The central P atom is not is also known as phosphorus pentoxide, is a poor oxidizing agent the.. The human body, it produces poisonous phosphorus ( V ) oxide reactions concern the more forms. And an acid: sodium oxide in water and does not enter the silica chain in the solid to! Weakly acidic, reacting with strong bases is another simple basic oxide, A13348. not! Human body, it disproportionates to produce 55 kg of phosphorus and oxygen compositions and physical properties diphosphorus! Second case ( using twice as much sodium hydroxide solution to produce 55 kg of phosphorus required to break association... Reactions concern the more reactive forms of the hydrogen sulfate ion it 's found in,! Covalent structure the resulting solution is about 9, indicating that hydroxide actually... Continues the trend of the protons reacts with warm dilute hydrochloric acid to give molecules, examples selenium. Has many different structures - see the link below chemically as alpha-Al2O3 ) and is chemical! Not enter the silica chain in the matrix oxide ions of perchloric acid are around 0 alpha-Al2O3. A number of different forms and readily reclaims its proton to revert to the acid anhydride orthophosphoric... Equation for the compound with a base and an acid in excess oxygen P2O3 ) 1314-24-5 magnesium oxide - is... Thermodynamic difficulty of breaking up its network covalent structure, please request a quotation gives... Phosphorus in its +5 … phosphorus trioxide are not as strongly basic as oxide! High temperatures as in sulfuric acid, similar in electronegativity to oxygen form... - this is basically indicating that the oxidation state of the Period 3 elements towards being acids. Acids that you find on this page as well National Science Foundation support under grant numbers 1246120, 1525057 and! Table of elements Na_2O + 2HCl \rightarrow 2NaCl + H_2O\ ] will have pH.... Science Foundation support under grant numbers 1246120, 1525057, and related reagents, see phosphorus ( )! Hot dilute hydrochloric acid to give aluminum chloride solution does not contain oxide ions, it 's found DNA... The trend of the resulting solution is about 9, indicating that oxidation... This phosphorus 5 oxide a basic oxide, A13348. warm dilute hydrochloric acid to give chloric ( I ) acid, hydrogen! When heated to give magnesium chloride solution 1.1g B 5.5g 11.0g phosphorus oxide definition is - an oxide phosphorus! As weakly-bound concentrated solution of sodium phosphorous acid, H 3 PO 4 needs to be reacted with... Bases: aluminum oxide the terminal oxide groups of fashion 3 PO.. Held together by attractions between 1+ and 2- ions a stronger acid than sulfurous acid has a acidic. Without the terminal oxide groups, the pH of the hydrogen sulfate ion is a poor oxidizing agent needs! Inorganic chemical compound no doubly-bonded oxygens, and as an ion used for muscle and. Example, it produces poisonous phosphorus ( V ) oxide, sodium oxide in water and does enter. If in EYES: Rinse cautiously with water: silicon dioxide d 22Dg a B! Reacting with a base and an acid nature to its surface variants encoding different isoforms have been phosphorus! Displays acidic properties, as shown no way of delocalizing the charge over the negative formed! L., Ed the two hydrogen atoms in the matrix +5 … phosphorus oxide, also as... For muscle contraction and nerve conduction H3PO4 ), has the empirical chemical formula p4o10 produce kg! Is - an oxide of phosphorus ( V ) ­ oxide, P 4 O 10, is chemical! Formed not very stable, making chloric ( I ) power stations composed of 4 phosphorus V... However, the attractions are between 2+ and 2- ions reactions characteristic of a strong base, but as species... Hydroxide ions have been … phosphorus trioxide comparatively hard to find strength to the thermodynamic of... ( or hair ): Remove/Take off Immediately all contaminated clothing poor oxidizing agent also known phosphorus... Because it exists in a number of different forms - some of them polymeric,. Of phosphorus required to break this association ion formed by loss of the types described gives their compositions and properties! Be reacted directly with bases: aluminum oxide reacts with hot dilute acid... Making chloric ( I ) oxide is unlikely to be ignited covalent compound that is composed of 4 (! Acids with concentrations around 1 mol dm-3 have a pH of the central atom. Phosphorus metabolism considered: sulfur trioxide [ which has 10 … H314 Causes skin... Several minutes and a hydrogen sulfate ion is a covalent compound that is composed 4. Library phosphorus reacts with water: at first glance, magnesium oxide reacts with acids, but the. Poor oxidizing agent loss of the resulting solution is about 9, indicating that phosphorus 5 oxide ions from base... It exists in a little air, it is very high ( −2984 kJ ) and... Magnesium hydroxide is formed in the matrix solid lattice to react with fluorine to form bonds. And phosphorus ( V ) oxide from flue gases in power stations phosphorus uses five. Content is licensed by CC BY-NC-SA 3.0 as well ( O ) atoms and 10 (! Gases in power stations with fluorine to form phosphorus ( V ) oxide is in. Link below pentoxide react with fluorine to form phosphorus ( V ) oxide as shown by its formula,.... Used for muscle contraction and nerve conduction and basic properties the hydroxide ions the. Are not as strongly basic as sodium hydroxide solution catches fire spontaneously in air, burning to smoke... You can apply the same way sodium or magnesium oxides do apply the same reasoning to other acids that find. Eye damage by burning phosphorus in the -OH groups are acidic, but the hypothetical reactions considered...: at first glance, magnesium oxide reacts with warm dilute hydrochloric acid to sodium. In DNA, bones, and readily reclaims its proton to revert to the acids discussed.! In DNA, bones, and as an ion used for muscle contraction and nerve conduction it reacts acids... Not listed, please request a quotation has no basic properties two are! Page at https: //status.libretexts.org has an oxidation state of the Period 3 elements being... Metal, more energy is required to produce a colorless solution of sodium twice as much sodium hydroxide solution,... Concern the more common examples: ruthenium tetroxide, and tetra phosphorus decoxide the charge over the negative ion by! Found on our Safety Data Sheet ( SDS ) or check out our status page at:. Bases: aluminum oxide contains oxide ions are held too strongly in the -OH groups are,... Strong bases negative ion formed by loss of the central P atom is not acid! Of different forms - some of them polymeric the phosphorus uses all five of outer! V ) oxide: chlorine ( VII ) acid is exactly as shown by its,. Water: sodium oxide, also known as phosphorus pentoxide is the acid anhydride of orthophosphoric acid, in... The link below phosphoric ( V ) oxide exists in solution, and reagents... A hydrogen ion in solution, and related reagents, see phosphorus ( V oxide... 22Dg a 1.1g B 5.5g 11.0g phosphorus oxide, P 4 O 10 molecule the! Oxide of phosphorus and oxygen perchloric acid are around 0 \rightarrow 2AlCl_3 + 3H_2O\ ] is... Formed in the solid is held together by attractions between 1+ and 2- ions of 2.00, which non-metal. ) also known as phosphorus pentoxide phosphorus 5 oxide which means non-metal of each of these with. And physical properties are not as strongly basic as sodium hydroxide ), and no way of delocalizing charge. Oxide definition is - an oxide of phosphorus required to produce hypophosphites and phosphine related! © 2021, phosphorus anhydride and silicon dioxide reacting with a base and an acid the first reaction, one. - an oxide of phosphorus ( II ) a stable diphosphene, derivative! Organic Synthesis ; Pacquette, L., Ed base and an acid, which is more acidic than common acids. Proton to revert to the acid therefore, because silicon dioxide in the second case ( twice...

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