Gas Laws

Question 1

Boyle’s Law

Answer 1

Volume is inversely proportional to pressure. Temperature and amount of gas must be constant.

P1 x V1 = P2 x V2

Question 2

Charles’ Law

Answer 2

For the given mass of a gas at a constant pressure, volume is directly proportional to absolute temperature.

V1 / T1 = V2 / T2

Question 3

Gay-Lussac’s Law

Answer 3

For a given mass & constant volume of an ideal gas, the pressure exerted on the sides of the container is directly proportional to the absolute temperature.

P1 / T1 = P2 / T2

Question 4

Avogadro’s Law

Answer 4

The volume occupied by an ideal gas is directly proportional to the number of molecules of the gas present in the container. The pressure and temperature must be constant.

v1 / n1 = v2 / n2