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Medical College Admission Test
Chemical and Physical Foundations of Biological Systems

Theoretical Yield of Phosphoric Acid from P2O5

Very Hard General Chemistry Stoichiometry And Chemical Reactions

In a laboratory, a chemist aims to synthesize phosphoric acid (H3PO4) from phosphorus pentoxide (P2O5) and water (H2O). The balanced chemical reaction for this process is:

P2O5(s) + 3 H2O(l) → 2 H3PO4(aq)

Suppose the chemist starts with 10 g of P2O5 and an excess of water. Calculate how many grams of phosphoric acid (H3PO4) can be produced from this amount of phosphorous pentoxide. Given that the molar mass of P2O5 is 142 g/mol and that of H3PO4 is 98 g/mol, what is the theoretical yield of phosphoric acid in grams?

Hint

Submitted9.3K
Correct9.2K
% Correct98%