Question

A bottle contains certain volume of a gas at 27oC. To what temperature must the bottle be subjected so that the

volume of the gas (a) increases by 25% (b) decreases by 25% ? (Pressure remaining constant).​

Answer 1

Explanation:

Imagine filling a rigid container attached to a pressure gauge with gas and then sealing the container so that no gas may escape. If the container is cooled, the gas inside likewise gets colder and its pressure is observed to decrease. Since the container is rigid and tightly sealed, both the volume and number of moles of gas remain constant. If we heat the sphere, the gas inside gets hotter (Figure 2) and the pressure increases.