Pressure Conversions

Worked Chemistry Problems

It's helpful to be able to work pressure conversions between standard units of atmospheric pressure.
It's helpful to be able to work pressure conversions between standard units of atmospheric pressure. Martin Deja, Getty Images

Pressure Conversion Problem

A radio station announcer reports the atmospheric pressure to be 99.6 kPa. What is the pressure in atmospheres? In millimeters of mercury?

Solution

Look up conversions factors in a table to convert between kilopascals and atmospheres and millimeters of mercury. Use a conversion factor approach to solve the problem:

99.6 kPa x 1 atm/101.3 kPa = 0.983 atm

0.983 atm x 760 mm Hg/1 atm = 747 mm Hg

Answer

0.983 atm; 747 mm Hg