What volume (L)of NH₃ gas at STP is produced by the complete reaction of 7.5 g of H₂O according to the following reaction? Mg₃N₂ (s)+ 6H₂O (l)→ 3Mg(OH)₂(aq)+ 2NH₃ (g) A)3.1 B)9.3 C)19 D)28 E)0.32

Question

Quizplus · Accepted Answer

The molar mass of H₂O is 18 g/mol. 7.5 g of H₂O is 0.4167 mol. From the balanced equation, 6 mol of H₂O produces 2 mol of NH₃. Therefore, 0.4167 mol of H₂O produces 0.1389 mol of NH₃. At STP, 1 mol of gas occupies 22.4 L, so 0.1389 mol of NH₃ occupies 3.1 L.

What Volume (L)of NH3 Gas at STP Is Produced by the Complete

What Volume (L)of NH₃ Gas at STP Is Produced by the Complete