Which law describes the relationship between volume and temperature at constant pressure?

The relationship between volume and temperature at constant pressure is described by Charles's Law. This law states that, for an ideal gas, the volume of the gas is directly proportional to its absolute temperature when the pressure is held constant. In mathematical terms, it can be expressed as V ∝ T or V/T = k, where V is volume, T is absolute temperature, and k is a constant.

This principle reflects the fact that as the temperature of the gas increases, the kinetic energy of the gas molecules also increases, causing them to move apart and thus occupy a larger volume. Conversely, if the temperature decreases, the volume of the gas will also decrease, provided the pressure remains constant.

Understanding this relationship is crucial for applications involving gas behavior, such as those in gas turbine systems, where temperature and volume fluctuating can significantly impact performance and efficiency.