Chapter 13, Problem 13.2P

Interpretation Introduction

Interpretation:

The pressure of $\text{985 mbar}$ has to be converted in terms of $\text{torr}$ and $\text{atm}$.

Concept Introduction:

Units often used in representation of pressure include Pascal, $\text{atm}$, and $\text{torr}$.

SI unit of pressure is the Pascal $\left(\text{Pa}\right)$ named Blaise Pascal. $\text{1 Pa}$ is defined as the pressure built when $1\text{N}$ force acts on ${\text{1m}}^2$. The more common unit for chemists is bar.

The relation between $\text{Pa}$ and ${\text{N/m}}^2$ is as follows:

  $\text{1 Pa}=1{\text{N/1m}}^2$

The relation between $\text{bar}$ and $\text{Pa}$ is as follows:

  $\text{1 bar}={10}^5\text{ Pa}$

The conversion factor to convert $\text{atm}$ to $\text{mm Hg}$ is as follows:

  $1\text{ atm}=\text{760 mm Hg}$