What happens to pressure in a closed system if the temperature is increased?

What happens to pressure in a closed system if the temperature is increased?

• A. Pressure decreases
• B. Pressure is unaffected
• C. Pressure increases
• D. Pressure fluctuates randomly

Answer: (C)

In a closed system, when the temperature is increased, the molecules within the system gain energy and move more vigorously. This increase in molecular activity leads to more frequent and more forceful collisions with the walls of the container, which ultimately results in an increase in pressure. This concept is grounded in the ideal gas law, which describes the relationship between pressure, volume, temperature, and the number of moles of gas in a system. According to the ideal gas law, if the volume of the closed system remains constant and the temperature increases, the pressure must also increase to maintain the equilibrium described by the law. Therefore, in a scenario where the temperature rises, the kinetic energy of the gas particles increases, causing the pressure to rise in the closed system, confirming that the correct answer is that pressure increases.

In a closed system, when the temperature is increased, the molecules within the system gain energy and move more vigorously. This increase in molecular activity leads to more frequent and more forceful collisions with the walls of the container, which ultimately results in an increase in pressure.

This concept is grounded in the ideal gas law, which describes the relationship between pressure, volume, temperature, and the number of moles of gas in a system. According to the ideal gas law, if the volume of the closed system remains constant and the temperature increases, the pressure must also increase to maintain the equilibrium described by the law.

Therefore, in a scenario where the temperature rises, the kinetic energy of the gas particles increases, causing the pressure to rise in the closed system, confirming that the correct answer is that pressure increases.