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  • Why is phosphorus (v) oxides molecular formula P4O10 and not P2O5
    This is a relationship many people often forget about So it's quite nice to remind them of the original $\ce{P4}$-tetrahedron by not shortening the formula down to $\ce{P2O5}$ And as many suggested above it's just the unit you will see
  • Why is phosphorous pentoxide a dehydrating agent?
    $$\ce{hno3 + p2o5 -> 2hpo3 + n2o5}$$ In this reaction, both nitrogen and phosphorus have the same oxidation number before and after the product is formed Since the $+5$ oxidation of nitrogen is unstable, it has to undergo reduction, but here it remains the same after the product is formed
  • How to convert P2O5 concentration to H3PO4 concentration?
    1 mol $\ce{P2O5}$ = 2 mol $\ce{H3PO4}$ and do wt percentage conversions to moles A 70% $\ce{P2O5}$ solution in water means 70 g $\ce{P2O5}$ is present in 100 grams of solution Do mol conversions You will also need the density of the solution
  • Is the proper formula for phosphorus oxide(V) P4O10 or P2O5?
    P2O5 is the empirical formula and P4O10 is the molecular formula $\endgroup$ – Xiaolei Zhu Commented
  • Is P2O5 ionic or covalent? - Homework. Study. com
    Give the total number of atoms in 0 20 g of P2O5 Write the definition for ionic bond? Why do nonmetals form covalent bonds? Why are ionic bonds stronger than covalent? How many total atoms are in 0 240 grams of P2O5? How do you write the formula for an ionic compound? What is the difference between covalent and ionic bonds?
  • organic chemistry - Dehydration of carboxylic acids using P2O5 . . .
    The hydrogen bonding stabilise the molecule, enabling the organic chain to form additional bonds by dispersion forces Also dehydration of carboxylic acids with phosphorus pentoxide (P2O5) yields acid anhydrides,because it strong dehydrated anhydride ;P2O5 itself reacts with water molecules to form phosphoric acid
  • Why does monoammonium phosphate (MAP) have 52% of phosphorus (P₂O₅)?
    To have a standard way of reporting the fertilizer analysis, phosphorus is reported as being $\ce{P2O5}$ rather than whatever form it actually is $\endgroup$ – MaxW Commented Mar 19, 2019 at 18:07
  • Mechanism of carboxylic acid and amide dehydration with phosphorus . . .
    Phosphorus(V) oxide is not really P4O10, either, at least not in its most stable state It's a polymer So showing it as P2O5 isn't 100% accurate but doesn't matter for the mechanism Wikipedia has more about the various polymorphs of the compound $\endgroup$ –
  • P2O5 concentration % based on a 75% Phosphoric Acid Solution
    If now you want to dilute it to get a solution containing $4 7$ % $\ce{P2O5}$, you have to take $4 7 54 3 = 8 65$ % of your initial solution All these values are supposed to be made in mass, and not in volume
  • Reactions of P2O5 and P4O10 with sulfuric acid [closed]
    The common name is derived from its empirical formula, $\ce{P2O5}$ This white crystalline solid is the anhydride of phosphoric acid: It is a potent dehydrating agent and used as a powerful desiccant (as indicated by the exothermic nature of its hydrolysis) in limited capacity: $$\ce{P4O10 + 6H2O -> 4H3PO4} \qquad \Delta H = \pu{-177 kJ}$$





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