Pressure

Pressure is defined as the force acting on a unit area of surface

Thus 1 Pa = 1 N/m² = (1 kg m/s²)/m² = 1 kg m^-1s^-2. In your study of chemistry, you will encounter several other pressure units. Some of these are listed in Table 1-1.

The pressure exerted by a column of fluid is

Example 1

What is the pressure at the bottom of a 2.00-m column of water (density 1.00 g/cm³)? Express the pressure in Pa, bar, atm, and torr.