Chapter 5, Problem 5.114QP

Interpretation Introduction

Interpretation:

The relative humidity has to be determined with the given conditions.

Concept Introduction:

Relative Humidity is expressed in percent of the quantity of atmospheric moisture relative to the quantity that would be there if the air were flooded.  Given that the latter amount is dependent on temperature; comparative humidity is a purpose of both moisture content and temperature.

$\text{Relative}\text{Humidity}\text{=}\frac{\text{partial}\text{pressure}\text{of water}\text{vapor}}{\text{equilibrium}\text{vapor}\text{pressure}}\text{×}\text{100\%}$

• The pressure exerted by an individual gas in a mixture is known as its partial pressure.
• Assuming we have a mixture of ideal gases, we can use the ideal gas law to solve problems involving gases in a mixture.
• Dalton's law of partial pressure states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases:

${\text{P}}_{\text{Total}}\text{}{\text{=P}}_{\text{gas 1}}\text{}{\text{+P}}_{\text{gas 2}}\text{}{\text{+P}}_{\text{gas 3}}\text{}\mathrm{....}$