Which statement best describes Gay Lussac's Law?

The statement that pressure is directly related to temperature is at the core of Gay-Lussac's Law. This law states that when the volume of a gas is held constant, the pressure of the gas increases as the temperature increases, and conversely, the pressure decreases when the temperature decreases. This relationship can be mathematically expressed as P/T = k, where P is the pressure, T is the temperature (in Kelvin), and k is a constant for a given amount of gas at a constant volume.

Understanding this relationship is critical because it highlights how temperature influences the kinetic energy of gas molecules. As temperature rises, gas molecules move more vigorously, resulting in more frequent and forceful collisions with the walls of their container, thus increasing pressure. This principle is fundamental in various practical applications, such as in the behavior of gases under different temperature conditions in closed systems.

In contrast, the other choices describe different concepts not related to Gay-Lussac's Law. For instance, the relation of pressure to volume (which describes Boyle's Law) and the relationship between volume and moles (which pertains to Avogadro's Law) do not apply here, as they focus on different gas behaviors under varying conditions. Consequently, option C accurately reflects the essence of