Question

Camphor in nitrogen gas is a type of solution:

• A. Gas – Gas
• B. Solid – Gas
• C. Liquid – Gas
• D. Solid – Liquid

Answer 1

The Correct Option is B

The solution of camphor in nitrogen gas is classified as a Solid – Gas solution. Here's a detailed explanation:

Components:

• Solute: Camphor (solid)
• Solvent: Nitrogen gas (gas)

Process:

Camphor, in its solid state, undergoes sublimation. Sublimation is the process where a solid transitions directly into a gas phase without passing through the liquid phase. This occurs because camphor has a relatively high vapor pressure, allowing it to readily vaporize. The camphor vapor then mixes uniformly with the nitrogen gas, creating a homogeneous mixture.

Why it's a Solid – Gas Solution:

The key factor is the initial state of the solute and the final state of the mixture. Camphor starts as a solid, and the resulting mixture is a gas. Therefore, it's a solid dissolving into a gas. This distinguishes it from other types of solutions, such as:

• Gas – Gas: Both solute and solvent are gases (e.g., air).
• Liquid – Gas: A liquid dissolves in a gas (e.g., water vapor in air).
• Solid – Liquid: A solid dissolves in a liquid (e.g., salt in water).

In this case, the solid camphor is dispersed as a gas throughout the nitrogen gas, making it a solid-gas solution.