What is the primary factor that determines the rate of diffusion of a gas?

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Question: What is the primary factor that determines the rate of diffusion of a gas?

Options:

Correct Answer: Molecular weight

Solution:

According to Graham\'s law of effusion, the rate of diffusion of a gas is inversely proportional to the square root of its molecular weight.

What is the primary factor that determines the rate of diffusion of a gas?

What is the primary factor that determines the rate of diffusion of a gas?

Step 1: Understand what diffusion is. Diffusion is the process where gas molecules spread out from an area of high concentration to an area of low concentration.
Step 2: Learn about molecular weight. Molecular weight is a measure of how heavy a gas molecule is.
Step 3: Know Graham's law of effusion. This law states that lighter gases (with lower molecular weight) diffuse faster than heavier gases (with higher molecular weight).
Step 4: Remember the relationship. The rate of diffusion is inversely proportional to the square root of the molecular weight. This means that as the molecular weight increases, the rate of diffusion decreases.
Step 5: Apply the concept. If you have two gases, the one with the lower molecular weight will diffuse more quickly than the one with a higher molecular weight.

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