Question

4 mol of gas is measured at 4 atm pressure to have a volume of 3 L, a temperature of 270 K. If the conditions change such that there are 3 mol at 2 atm and at 300 K, what is the new volume?

Answer 1

Pressure, temperature and number of moles of the gas have changed so

According to ideal gas equation PV = nRT

From that we can write P₁V₁ / n₁T₁ = P₁V₁ / n₂T₁

P₁ = 4 atm V₁=3L T₁= 270K n₁ = 4mol

P₂ =2 atm T₂= 300K n_{2 =} 3 mol

Thus V₂ = 5L

2Thus V