Chapter 5, Problem 5.156P

Interpretation Introduction

Interpretation:

The partial pressure of ${\text{I}}_{\text{2}}$ gas is to be calculated.

Concept introduction:

Ideal gas law relates pressure, volume, temperature, and number of moles of gas.

The ideal gas equation can be expressed as follows,

  $PV=nRT$        (1)

Here, $P$ is the pressure, $V$ is the volume, $T$ is the temperature, $n$ is the mole of the gas and $R$ is the gas constant.

The expression to calculate the partial pressure of the gas is as follows:

  $P_{\text{gas}}=X_{\text{gas}}\cdot P_{\text{total}}$

Here, $P_{\text{gas}}$ is the partial pressure of the gas, $X_{\text{gas}}$ mole fraction of the gas and $P_{\text{total}}$ is the total pressure.

The expression to calculate the mole fraction of the gas is as follows:

  $X_{\text{gas}}=\frac{\text{Moles of gas}}{\text{Total moles}}$

Here, $X_{\text{gas}}$ is the mole fraction of the gas.