Chapter 13, Problem 109AP

Interpretation Introduction

Interpretation:

Reason for expansion of weather balloons as they rise, with the decrease of atmospheric pressure, even though the decreasing temperature of upper atmosphere causes the contraction should be explained.

Concept Introduction:

The Ideal gas law;

$\text{P}\text{V}=\text{n}\text{R}\text{T}$

Where,

P = Pressure of the ideal gas (atm)

V = Volume of the ideal gas (L)

n = number of moles of ideal gas present (mol)

R = Universal gas constant (L atm/K)

T = Temperature in Kelvin (K)

$\text{V}=\frac{\text{n}\text{R}\text{T}}{\text{P}}$ Since n and R are constant, $\text{V}\text{α}\frac{\text{T}}{\text{P}}$.