The total pressure of a mixture of ideal gases is the sum of partial pressures. This is ______ law of partial pressures.

Question

Question

This question was previously asked in

SSC CHSL Tier-I Exam 2022 Official Paper (Held On: 20 March, 2023 Shift 4)

Answer 1

The correct answer is Option 1.

Key Points

This is known as Dalton's law of partial pressures.
According to Dalton's law, the total pressure exerted by a mixture of non-reacting ideal gases is equal to the sum of the partial pressures of each individual gas.
Dalton's law is based on the assumption that the gases in the mixture behave independently of one another, without any significant interactions or reactions.

Additional Information

Boyle's Law:
- Boyle's law states that, at a constant temperature, the volume of a given amount of gas is inversely proportional to its pressure.
- In other words, as the pressure of a gas increases, its volume decreases, and vice versa, provided the temperature remains constant. Mathematically, Boyle's law can be expressed as:
- P₁V₁ = P₂V₂
- where P₁ and V₁ are the initial pressure and volume, and P₂ and V₂ are the final pressure and volume, respectively.
Charles's Law:
- Charles's law states that, at a constant pressure, the volume of a given amount of gas is directly proportional to its absolute temperature. This means that as the temperature of a gas increases, its volume also increases, and as the temperature decreases, its volume decreases, as long as the pressure remains constant. Mathematically, Charles's law can be expressed as:
- V₁/T₁ = V₂/T₂
- where V₁ and T₁ are the initial volume and temperature (in Kelvin), and V₂ and T₂ are the final volume and temperature, respectively.
Avogadro's Law:
- Avogadro's law states that, at a constant temperature and pressure, equal volumes of gases contain an equal number of particles (atoms, molecules, or ions).
- This law implies that the volume of a gas is directly proportional to the number of moles of gas present. Mathematically, Avogadro's law can be expressed as:
- V₁/n₁ = V₂/n₂

where V₁ and n₁ are the initial volume and number of moles, and V₂ and n₂ are the final volume and number of moles, respectively.