What is the effect of decreasing temperature and increasing pressure on a gas?

Decreasing temperature decreases the kinetic energy of gas particles and applying pressure decreases the space between particles which in turn strengthens the attractive forces between particles. These changes force the gas to liquefy and change its state to liquid.

Why do gases liquify on increasing the pressure and decreasing the temperature explain?

On increasing pressure the volume of the gas decreases which brings gaseous molecules together and decreases the space between them and on decreasing the temperature the kinetic energy of the molecules decreases and forces of attraction between them increases and thus, gas can be converted into liquid.

How does a gas change with temperature and pressure?

Gay Lussac’s Law – states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. If you heat a gas you give the molecules more energy so they move faster. This means more impacts on the walls of the container and an increase in the pressure.

Why do gases liquify under pressure?

Liquefaction of gases is the process by which substances in their gaseous state are converted to the liquid state. When pressure on a gas is increased, its molecules closer together, and its temperature is reduced, which removes enough energy to make it change from the gaseous to the liquid state.

What is the effect of decreasing the temperature on gas?

As the temperature of a solid, liquid or gas increases, the particles move more rapidly. As the temperature falls, the particles slow down.

How can we increase or decrease pressure?

Summary

1. An increase in the number of gas molecules in the same volume container increases pressure.
2. A decrease in container volume increases gas pressure.
3. An increase in temperature of a gas in a rigid container increases the pressure.

Can we liquify gases by applying pressure or reducing temperature?

Gases can be liquefied by applying pressure and reducing temperature. The liquefaction of gas takes place when the intermolecular forces of attraction increase to an extent that they combine the gas molecules together to form a liquid state.

How does reducing temperature and applying pressure can liquefy gases explain with example?

If the intermolecular spaces between the gas molecules is decreased then gases can be liquified. On reducing the temperature kinetic energy of the particles decreases and these particles start moving slowly. On applying pressure gas molecules are brought together thus changing them to liquid state.

Why are low temperatures required to liquify some gases?

Similarly, low pressures result in greater distances between the molecules, while higher pressures will result in shorter distances. Thus, a low temperature/high pressure combination will be required to liquefy a gas.

How do we liquify the gases Class 9?

When enough pressure is applied, the gases are highly compressed into a small volume. The particles of gases get so close together that they start attracting one another sufficiently to form a liquid. Therefore, Gases can be liquefied by applying high pressure and low temperature.