According to which of the following laws, the pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases?

Question

Question

This question was previously asked in

SSC CHSL Tier-I Exam 2022 Official Paper (Held On: 13 March, 2023 Shift 4)

Answer 1

The correct answer is Dalton's Law.

Key Points

Dalton's Law:
- Definition: Dalton's Law, also known as the Law of Partial Pressures, states that the total pressure exerted by a mixture of gases is the sum of the partial pressures of the individual gases.
- Partial Pressure: The pressure that each gas would exert if it alone occupied the entire volume of the mixture is its partial pressure.
- Independent Behaviour: The law assumes that gases behave independently of each other, meaning the pressure of each gas in a mixture is unaffected by the presence of other gases.
- Applications: Dalton's Law has important applications in many areas including chemistry, physics, physiology, and even scuba diving, where understanding the pressures of different gas components is crucial.

Additional Information

Law

Description

Charles' Law

States that the volume of a given mass of an ideal gas is directly proportional to the absolute temperature provided its pressure remains constant.

Boyle's Law

Proposes an inverse relationship between the pressure and volume of a gas, assuming the temperature is kept constant within a closed system.

Graham's Law

Describes the relationship between the rates of diffusion of gases and their molar masses.

It states that the rate of diffusion of a gas is inversely proportional to the square root of its molar mass.