What happens to the temperature of a gas if the number of moles of gas in increased?

Answer 1

If you increase the temperature of a gas, its particles (atoms or molecules) will speed up. If it is in a closed container, the pressure will also increase.

Answer 2

If you increase the temperature of a gas, its particles (atoms or molecules) will speed up. If it is in a closed container, the pressure will also increase.

Answer 3

In order to understand what happens to the temperature of a gas when the volume of the gas increases, you must understand a couple of things first.

For starters, a gas is one of the three states of matter (liquids & solids). Yet, what does being called a "gas" actually mean? The main difference between a substance in gaseous, liquid, or solid state is the arrangement, vibrations, and free movement of the molecules.

I'm sure you think of a gas as free-floating particles, which is sort of right. If we put a gas into a closed container, it will assume the shape and volume of whatever is containing it... because the molecules can freely move past each other. Due to the freedom of movement and space, gases are highly compressible. They also vibrate and move at fast speeds, bouncing and colliding with other molecules and the walls of the container.

Now let's get to your question, the temperature or heat or energy of a gas comes from the amount of collisions of the molecules. If you are increasing the volume, you are providing more space between the molecules. Therefore, it is a greater distance for a molecule to collide into a wall or another molecule. As a result, the less collisions, the less heat given off, and the temperature will drop.

But if you meant increasing the volume by adding more gas to the original container, then you are adding more molecules into a fixed space... which will increase the temperature.

I hope that wasn't too confusing!

Answer 4

If the volume and pressure are held constant, an increase in the number of moles of a gas will lead to an increase in temperature. This is known as Charles's Law, which states that the volume of a gas is directly proportional to its absolute temperature when pressure is held constant.

Answer 5

Assuming the volume is not allowed to change, the temperature will increase.