In physics, the gas constant is defined as the product of pressure and volume. It is denoted by R and expressed as energy per temperature increase per mole. The value of gas constant at atm is constant. But the value of gas constant can be expressed using various units. It is also known as ideal gas constant or universal gas constant or molar constant.
Value Of Gas Constant
The value of R at atm that is at standard atmospheric pressure is R = 8.3144598 J.mol-1.K-1.
Value Of R
The value of R can be expressed in multiple units. The table given below is comprised of the list of values of R in diverse units.
| Values of R | Units |
| 8.3144598 | J.K-1.mol-1 |
| 8.3144598 × 103 | amu.m2.s-2.K-1 |
| 8.3144598 × 10-2 | L.bar.K-1.mol-1 |
| 8.3144598 | m3.Pa.K-1.mol-1 |
| 62.363577 | L.Torr.K-1.mol-1 |
| 1.9872036 × 10-3 | kcal.K-1.mol-1 |
| 8.2057338 × 10-5 | m3.atm.K-1.mol-1 |
| 0.082057338 | L.atm.K-1.mol-1 |
Gas Constant Formula
Where,
- P is the pressure of the ideal gas.
- V is the volume of the ideal gas.
- T is the temperature.
- n is the number of the ideal gas
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