What does Guy-Lussac's Law state regarding pressure and temperature?

Guy-Lussac's Law specifically states that for a fixed amount of gas at constant volume, the pressure of the gas is directly proportional to its absolute temperature (measured in Kelvin). This means that as the temperature increases, the pressure also increases, provided that the volume does not change. This relationship can be mathematically expressed as P/T = k, where P is the pressure, T is the temperature, and k is a constant.

When temperature is measured in Kelvin, it ensures that the values are always positive, making the proportionality valid. Therefore, if the temperature of the gas were to double (in Kelvin), the pressure would also double, demonstrating the direct relationship outlined in Guy-Lussac's Law.

Understanding this law helps explain various real-world phenomena, such as how gas pressure in closed containers can increase when the temperature rises, or how gas behavior changes in different thermal conditions.