Which of the following statements is correct for Gay Lussac's Law?

The statement that temperature and pressure are directly proportional when volume is held constant is a fundamental concept of Gay Lussac’s Law. This law states that for a given amount of gas at constant volume, the pressure of the gas increases as its temperature increases, and conversely, when the temperature decreases, the pressure also decreases. This relationship can be mathematically expressed as P1/T1 = P2/T2, where P represents pressure and T represents temperature in Kelvin.

Understanding this law is important in respiratory care because it can explain how changes in temperature within the lungs can affect the pressure of the gases involved in respiration. For instance, body temperature can influence the behavior and pressure of inhaled gases as they enter the respiratory system.

The other statements do not accurately represent the relationship outlined in Gay Lussac’s Law, though they may refer to different gas laws or principles. For example, pressure increases when temperature decreases contradicts the core principle of Gay Lussac’s Law. Similarly, while there is a relationship between volume and pressure as described in Boyle’s Law, which states that volume and pressure are inversely proportional when temperature is constant, this does not align with Gay Lussac’s Law. Lastly, the behavior of gas mixtures