Chapter 5, Problem 5.4P

Interpretation Introduction

Interpretation:

The barometric pressure in centimeters of water should be calculated.

Concept Introduction:

The force which is exerted by a gas on the walls of the container is known as pressure of a gas.

The atmospheric pressure which is exerted by the weight of the air above it at any point on the surface of earth is known as barometric pressure. The atmosphere supports a mercury column about 760 mmHg at sea level.

Barometer is used to measure the barometric pressure which is occupied with mercury electrode.

The formula which states the relationship between height of liquid columns and densities is:

  $\frac{h_{{\text{H}}_{\text{2}}\text{O}}}{h_{\text{Hg}}}=\frac{d_{\text{Hg}}}{d_{H_{2}O}}$

Where,

  $h_{{\text{H}}_{\text{2}}\text{O}}$ = height of column in water.

  $h_{\text{Hg}}$ = height of mercury.

  $d_{\text{Hg}}$ = density of mercury.

  $d_{{\text{H}}_2\text{O}}$ = density of water.