Question

The ratio of the diffusion rates of two gases is given by the formula

Answer 1

Rate of diffusion is inversely proportional to the root of molar mass of the gas.

Answer 2

Explanation:

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

Mathematically, $\frac{Rate_{1}}{Rate_{2}}= \sqrt{\frac{M_{2}}{M_{1}}}$

where,  

            [tex]R_{1} [/tex] = rate of effusion or diffusion of first gas

             [tex]R_{2} [/tex] = rate of effusion or diffusion of second gas

              [tex]M_{1} [/tex] = mass of first gas

             [tex]M_{2} [/tex] = mass of second gas

The rate of diffusion helps to determine the rate at which two gases mixes with each other. Whereas rate of effusion helps to determine the rate at which a gas escapes into the vacuum.