Question

Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pressure conditions?

Boyle’s law
Charles’s law
Dalton’s law
Gay-Lussac’s law

Answer 1

Charles law

Step-by-step explanation:

Relationship between volume and absolute temperature is given by Charles's law.

According to Charles's law, at constant pressure, volume of a gas of a fixed quantity is directly proportional to the absolute temperature.

Mathematically Charles's law is expressed as:

`V \propto T`

Charles's law is applicable only for ideal gases.

Bolyles's law gives relationship between pressure and volume at fixed temperature.

Gay-Lussac’s law gives the relationship between pressure of a gas and its absolute temperature.

Dalton's law gives the relationship between pressure of the mixture of non reacting gases and partial pressure of individual gas.

Therefore, among, Charles's law is the correct opion.

Answer 2

The answer is Charles’s Law:

The volume of a gas held at constant pressure is is directly proportional to its absolute temperature.

It is the only law where the pressure is held constant. All the other ones have variable pressure.