Chapter 14.2, Problem 20LC

Interpretation Introduction

Interpretation: To determine what situation is the combined gas law useful.

Concept Introduction: Combined gas law is made by the Boyles law and Charles law. It gives the relation between pressure, volume, and temperature.

Answer to Problem 20LC

Ideal gas law will be helpful when two specified pressures, volumes, as well as temperatures, are combined with an unknown third.

Explanation of Solution

When two pressures, and volumes, including temperatures, are given and an unidentified pressure, volume, or temperature would be requested, the Combined Gas Law can be helpful.

Ideal gas law can be expressed as:

  $\frac{{\text{P}}_{\text{1}}{\text{V}}_{\text{1}}}{{\text{T}}_{\text{1}}}\text{=}\frac{{\text{P}}_{\text{2}}{\text{V}}_{\text{2}}}{{\text{T}}_{\text{2}}}$

Where, ${\text{P}}_{\text{1}}$ = first pressure, ${\text{P}}_{\text{2}}$ = second pressure, ${\text{V}}_{\text{1}}$ = first volume, ${\text{V}}_{\text{2}}$ = second volume, ${\text{T}}_{\text{1}}$ = first temperature, ${\text{T}}_{\text{2}}$ = second temperature.