Chapter 4.2, Problem 4E

Interpretation Introduction

Interpretation:Fresh cup of tea made with boiling water is not as hot at higher altitude as it is at sea level should be explained.

Concept introduction:Dalton’s law of partial pressures states that total pressure over liquid is defined as sum of partial pressure of sample and that of air. In this, partial pressure of sample is taken as equal to equilibrium vapor pressure at specific temperature.

The expression for Dalton’s law of partial pressures is as follows:

  ${\text{P}}_{\text{total}}={\text{P}}_{\text{sample}}+{\text{P}}_{\text{air}}$

Where,

• ${\text{P}}_{\text{total}}$ is total pressure.
• ${\text{P}}_{\text{sample}}$is pressure of sample.
• ${\text{P}}_{\text{air}}$is pressure of gas.