Chapter 13, Problem 61A

Interpretation Introduction

Interpretation:

The Avogadro's Law needs to be stated.

Concept introduction:

The change in volume of the gas on changing the mass of the gas is studied by a law named as Avogadro's Law.

Answer to Problem 61A

According to it, equal volume of all gases contain equal number of molecules.

Explanation of Solution

Avogadro's Law is to be used to calculate new volume of the gas on changing the mass of the gas in container. The formula given by this law is:

$\begin{array}{l}V\propto n\\ or\\ \frac{V_1}{{\mathrm{n}}_1}=\frac{V_2}{{\mathrm{n}}_2}\end{array}$

Where

$\mathrm{V}$ is volume of the gas

$\mathrm{n}$ is the number of moles of the gas

Conclusion

The volume of the gas is directly proportional to the number of moles of the gas if temperature and pressure are constant.