Chapter 12, Problem 43A

Interpretation Introduction

Interpretation:

The ratio of effusion rate of krypton and neon needs to be determined.

Concept introduction:

Rate of effusion is defined as change in number of effusion molecules inside the cell over time.

Answer to Problem 43A

The ratio of rate of effusion is $0.4931$.

Explanation of Solution

Rate of effusion can be determined as follows:

$\frac{R_1}{R_2}=\sqrt{\frac{M_2}{M_1}}or\frac{R_2}{R_1}=\sqrt{\frac{M_1}{M_2}}$

Where $R_1,R_2$ are rate of effusion of gas and $M_1,M_2$ are molecular weight of gas.

Here, krypton and neon gas are used.

$\frac{R_{kr}}{R_{Ne}}=\sqrt{\frac{M_{Ne}}{M_{kr}}}=\sqrt{\frac{20}{84}}=0.4931$.

It is explained by Graham’s law which is used to determine the rate of effusion or diffusion of gas.

Conclusion

Rate of effusion is determined by Graham’s Law.