The density of ammonia gas in a 4.32 L container at 837 torr and 45.0°C is __________ g/L.

Question

Quizplus · Accepted Answer

The ideal gas law can be used to solve for the density of ammonia gas:

PV = nRT

n/V = P/RT

The molar mass of ammonia is 17.03 g/mol.

n = m/M = dV/M

d = nM/V

Substituting the given values:

d = (P/RT)(M/V)

d = (837 torr)/(0.0821 L·atm/mol·K)(318.15 K)[(17.03 g/mol)/1000 g/kg]

d = 0.719 g/L.

Therefore, the answer is B.

The Density of Ammonia Gas in a 4