What happens to the density of a gas when the temperature is increased at constant pressure?

Answer 1

As the gas warms it will want to expand and as the pressure is constant it is being allowed to do so. This means that the same number of molecules (the original mass) is/are now taking up a bigger volume and as density is a measure of mass over volume ie:-

Density = Mass/volume

it is obvious what the density will do because the mass is constant and the volume is increasing.

Mass = 10

Volume 1 = 20

Volume 2 = 40

State 1 Mass/Volume 1 = 10/20 = density 0.5

State 2 Mass/Volume 2 = 10/40 = density 0.25

Answer 2

When the temperature of a gas is increased at constant pressure, the density of the gas decreases. This is because the increase in temperature causes the particles in the gas to move faster and spread out more, resulting in a decrease in density.

Answer 3

According to Charles' Law:

Volume of a gas increases as temperature inceases. But if the gas is contained in a rigid container then the volumme cannot increase, but the pressure will.

Answer 4

If temperature increases at a constant pressure the volume will increase. Temperature and volume both stick together T-V --->(DOWN)

Answer 5

By P1V1 = P2V2 for constant T, if P2 increases then V2 must reduce.

Answer 6

It increases in volume due to the fact that the molecules spread farther apart.

Answer 7

Volume and temperature are directly proportional to each other and so when temperature is increased the volume also increase and vise virsa

Answer 8

It becomes less dense

Answer 9

The volume shrinks.