Question

The diffusion of gas is ____________

(a) Linear process

(b) Slow process

(c) Spontaneous process

(d) Non- spontaneous process

The question was asked during an interview.

My doubt is from Molecular Diffusion topic in portion Mass Transfer of Bioprocess Engineering

Answer 1

The correct answer is:

(c) Spontaneous process

Explanation:

The diffusion of gas is a spontaneous process.

• Spontaneous processes are those that naturally occur without the need for external influence once they are initiated. Diffusion happens spontaneously as gas molecules move from regions of higher concentration to lower concentration due to the random motion of particles. This is driven by the principle of entropy, where the system tends to increase disorder or randomness.