Question

Which conversion factor is needed to solve the following problem?

How many liters of ammonia gas (NH3), can be formed from 54.1 liters of hydrogen gas (H2) at STP?

3H2 + N2 --> 2NH3

Question options:

Molar Volume


Molar Mass of Hydrogen (H2)


Molar Mass of ammonia (NH3)


Avogadro's Number

Answer 1

Molar Volume is required to solve this problem. As we know that "1 mole of any gas at standard temperature and pressure occupies 22.4 L of volume". SO using this concept, we can calculate the volume of ammonia formed by reacting 54.1 L of Hydrogen gas as follow,