Question

The rate of diffusion of liquids is higher than that of solids because:

• A. in solid state, particles have least force of attraction between the particles.
• B. in solid state, particles cannot be compressed easily.
• C. in the liquid state, particles move freely as compared to solids.
• D. in the liquid state, particles are tightly packed.

Answer 1

The correct option is C in the liquid state, particles move freely as compared to solids.

Diffusion is the movement of particles from an area of high concentration to an area of low concentration.

Rate of diffusion depends on the:
1. intermolecular force of attraction
2. interparticle spaces.

In the liquid state, particles have greater space and weaker force of attraction between them as compared to particles in solid-state. Thus, in liquids, the particles move freely as compared to solids. Hence it has a higher rate of diffusion.