How does temperature affect the volume of a gas?

Charles’ law (Gay-Lussac’s law) This law states that the volume and temperature of a gas have a direct relationship: As temperature increases, volume increases, when pressure is held constant. Heating a gas increases the kinetic energy of the particles, causing the gas to expand.

Does it require more energy to heat up a gas at constant pressure or constant volume?

The heat capacity at constant pressure CP is greater than the heat capacity at constant volume CV , because when heat is added at constant pressure, the substance expands and work.

What happens to the pressure of a gas when it is heated at constant volume?

It states that PV = nRT, where n is the number of moles of the gas and R is a constant called the universal gas constant. This relationship shows that, when pressure is constant, volume increases with temperature, and when volume is constant, pressure increases with temperature.

How does volume increase with temperature?

The volume of the gas increases as the temperature increases. As temperature increases, the molecules of the gas have more kinetic energy. They strike the surface of the container with more force. If the container can expand, then the volume increases until the pressure returns to its original value.

Why does temperature increase volume?

Another way to keep the pressure constant as the volume increases is to raise the average force that each particle exerts on the surface. This happens when the temperature is increased. So if the number of particles and the pressure are constant, temperature is proportional to the volume.

Why does it take more energy to raise the temperature of an ideal gas in a constant pressure process compared to a constant volume process?

For an ideal gas at constant pressure, it takes more heat to achieve the same increase in temperature than it does at constant volume. This is because, at constant volume all the heat goes into raising the temperature. At constant pressure some of the heat goes to doing work as well.

How is temperature related to pressure?

The pressure law states that for a constant volume of gas in a sealed container the temperature of the gas is directly proportional to its pressure. This can be easily understood by visualising the particles of gas in the container moving with a greater energy when the temperature is increased.