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The rate of diffusion of a gas is

a)

Directly proportional to its density

b)

Directly proportional to its molecular weight

c)

Directly proportional to the square root of its molecular weight

d)

Inversely proportional to the square root of its molecular weight


Question ID - 102477 | Toppr Answer

The rate of diffusion of a gas is

a)

Directly proportional to its density

b)

Directly proportional to its molecular weight

c)

Directly proportional to the square root of its molecular weight

d)

Inversely proportional to the square root of its molecular weight

1 Answer - 5876 Votes

3537

Answer Key : (d) -

(d)

According to Graham’s law of diffusion, the rate at which a gas diffuses is inversely proportional to the density of the gas. The movement of gas molecules from one place to the other along the concentration gradient is called diffusion. When they are allowed to escape through a tiny hole under pressure, this phenomenon is called effusion

Rate of diffusion of gas

Since the vapour density is  (molar mass)



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