How many moles of H 3 PO 4 are produced when 71.0 g P 4 O 10 reacts completely to form H 3 PO 4

It will be produced 1 mol of H₃PO₄

Explanation:

The reaction is this one:

P₄O₁₀ + 6H₂O → 4H₃PO₄

Molar mass of P₄O₁₀ = 283.88 g/m

Mol = Mass / Molar mass

Mol = 71 g / 283.88 g/m = 0.250 mol of P₄O₁₀

Ratio is 1:4 so 1 mol of P₄O₁₀ will produce 4 moles of phosphoric in the reaction.

0.250 mol of P₄O₁₀ will produce 1 mol of H₃PO₄ (0.250.4)