Table of Contents
- 1 What happens to the pressure of the gas if its temperature stays constant?
- 2 When a gas expands at a constant temperature?
- 3 When temperature increases then pressure will?
- 4 When a gas is heated A under constant pressure conditions the molecules of the gas?
- 5 Why does the pressure increase when temperature increases?
- 6 How is the volume of a gas related to its temperature?
- 7 How is the relationship between temperature and pressure explained?
What happens to the pressure of the gas if its temperature stays constant?
The combined gas law states that the pressure of a gas is inversely related to the volume and directly related to the temperature. If temperature is held constant, the equation is reduced to Boyle’s law. Gay-Lussac’s law states that at constant volume, the pressure and temperature of a gas are directly proportional.
What happens when gas expands at constant pressure?
If a gas is to expand at a constant pressure, heat should be transferred into the system at a certain rate. This process is called an isobaric expansion. Fig 1: An isobaric expansion of a gas requires heat transfer during the expansion to keep the pressure constant. Since pressure is constant, the work done is PΔV.
When a gas expands at a constant temperature?
It is correct because at constant temperature kinetic energy of the gas remains the same. Therefore, if gas expands at a constant temperature the kinetic energy of the molecules remains the same.
What would be the effect of increase of temperature on pressure provided the volume is constant?
What would be the effect of increase of temperature on pressure provided the volume is constant? At constant volume, as the temperature is increased, pressure increases.
When temperature increases then pressure will?
As the temperature increases, the particles move faster, and therefore have greater speeds, so greater momentum and therefore greater force when they collide with the walls, so the pressure increases.
Why does the pressure of gas increase when the temperature increases?
The temperature of the gas is proportional to the average kinetic energy of its molecules. Faster moving particles will collide with the container walls more frequently and with greater force. This causes the force on the walls of the container to increase and so the pressure increases.
When a gas is heated A under constant pressure conditions the molecules of the gas?
When you heat a gas, both its vapor pressure and the volume it occupies increase. The individual gas particles become more energetic and the temperature of the gas increases.
What is the correct value of the gas constant R?
8.3144598 J
The value of R at atm that is at standard atmospheric pressure is R = 8.3144598 J. mol-1. K-1.
Why does the pressure increase when temperature increases?
What happens when pressure and temperature of a gas are constant?
The relationship of gases at a constant volume is given by Gay-Lussac’s law. Gay-Lussac’s law states that at constant volume, the pressure and temperature of a gas are directly proportional.
This means that the volume of a gas is directlyproportional to its Kelvin temperature. Think of it this way, if you increase the volume of a gas and must keep the pressure constant the only way to achieve this is for the temperature of the gas to increase as well.
What happens to the volume of gas when you decrease the pressure?
Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase. However, if you were to maintain a constant volume while decreasing pressure, the temperature would also have to decrease.
How is the relationship between temperature and pressure explained?
The relationship between pressure and temperature can be explained using the kinetic theory of gases. (a) When a gas is heated, the average kinetic energy of the molecules increases. The temperature of the gas increases. (b) The faster moving molecules strike the walls of the container more frequently.