How to Convert ATM Pressure to Celsius

Higher temperatures increase a gas's volume.
••• Jupiterimages/liquidlibrary/Getty Images

The ideal gas law relates a number of a gas's physical properties to one another. According to the law, the product of a gas's pressure and volume is proportional to the product of its temperature and the number of molecules in it. At a known pressure, you can therefore calculate a gas's temperature from its volume and its number of molecules. The final factor relating these values is a constant, known as the universal gas constant.

    Multiply the gas's pressure, in atmospheres, by its volume in liters. With a pressure, for instance, of 4 atmospheres, and a volume of 5 liters yields 4 x 5 = 20.

    Divide the result by the number of moles of gas. If, for instance, the gas contains 2 moles of molecules: 20 / 2 = 10.

    Divide the result by the gas constant, which is 0.08206 L atm/mol K: 10 / 0.08206 = 121.86. This is the gas's temperature, in Kelvin.

    Subtract 273.15 to convert the temperature to degrees Celsius: 121.86 - 273.15 = -151.29.

Related Articles

How to Calculate Saturation Pressure
What Do Plants Release Into the Air?
How to Convert ATM to Moles of Gas
How to Calculate the Number of Moles of Collected Hydrogen...
How to Calculate the Temperature Drop Due to a Pressure...
How to Find the Cross Sectional Area of a Pipe
How to Calculate Particle Concentration
How to Calculate Volume of a Rectangular Prism
How to Convert Ppm to Ug/Cubic Meter
Experiments With Kinetic Molecular Theory
How to Convert Kilopascals to Joules
How to Calculate the Pressure of Hydrogen Gas
How to Calculate the Height of a Cone From the Volume
How to Calculate Liquid Oxygen to Gaseous Oxygen
How to Convert Vapor Pressure to Concentration
How to Convert the Volume of Co2 Gas to Liquid
How to Convert KPS to PSI
How to Convert mm Hg to in Hg
How to Calculate Heat Loss During Pipeline Depressurization