Question

Which of the following states that the total pressure exerted by a gaseous mixture is equal to the sum of the partial pressures?

• A. Amagat’s law
• B. Raoult’s law
• C. Dalton’s law
• D. Avogadro’s law

Hint:

Use Dalton’s law when dealing with mixtures of gases and calculating total pressure from known partial pressures.

Answer 1

The Correct Option is C

Step 1: Recall Dalton’s law of partial pressures. Dalton’s law states that the total pressure of a mixture of non-reacting gases is equal to the sum of the partial pressures of individual gases: \[ P_{\text{total}} = P_1 + P_2 + \cdots + P_n \] Step 2: Understand other laws briefly.
Amagat’s law: Describes the total volume of gas mixtures, assuming additive volumes.
Raoult’s law: Relates to vapor pressure of components in a liquid solution.
Avogadro’s law: States equal volumes of gases contain equal number of molecules at same temperature and pressure.