What mass of nitrogen gas is required to react completely with excess hydrogen gas to produce 13.6 g of ammonia?
A) 11.2 g
B) 0.06 g
C) 22.4 g
D) 16.5 g
E) 44.8 g

Question

Quizplus · Accepted Answer

The balanced chemical equation for the synthesis of ammonia (NH3) from nitrogen (N2) and hydrogen (H2) is N2 + 3H2 -> 2NH3. The molar mass of NH3 is 17 g/mol, so 13.6 g of NH3 is 0.8 moles. According to the stoichiometry of the reaction, 0.4 moles of N2 are required to produce 0.8 moles of NH3. The molar mass of N2 is 28 g/mol, so 0.4 moles of N2 is 11.2 g.

What Mass of Nitrogen Gas Is Required to React Completely