What mass of phosphoric acid is obtained by the interaction of a 13 g oxide with water?

univerkov | September 3, 2021 | education

1. We make a chemical equation, not forgetting to put down the coefficients:

2P2O5 + 3H2O = 2H3PO4.

2. Using the equation, make up the proportion:

13/2 * 142 = m / 2 * 98.

3. Using the proportion made by the equation, we can find the mass of phosphoric acid:

m (H3PO4) = 9g.

Answer: m (H3PO4) = 9g.

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