How many grams of phosphoric acid is required to react with 7.4 g Ca hydroxide?

In order to determine the mass of phosphoric acid required for a chemical reaction with calcium hydroxide, you first need to write down the reaction equation:

2H3PO4 + 3Ca (OH) 2 -> Ca3 (PO4) 2 + 6H2O.

You can find the mass of the acid based on the number of moles. For x we take the mass of the acid, the mass of calcium bicarbonate – 7.4 g We get the proportion:

x / 2 = 7.4 / 3 => (7.4 * 2) / 3 => x = 4.93 g.

Answer: the mass of phosphoric acid required for the reaction with calcium bicarbonate is 4.93 g.