# Value Of R In Atm

In physics, the gas constant is defined as the product of pressure and volume. Denoted by R and expressed as energy per temperature increase per mole. The value of R in atm is constant. But the value of gas constant can be expressed using various units. The R 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 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

The above value is calculated using the ideal gas equation as follows:

PV = nRT

$\Rightarrow R=\frac{PV}{nT}$

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 moles of a given substance

Hope you have learnt the value of R at atm, along with the list of the value of R in various other units.

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