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Value of universal gas constant (R) is s...

Value of universal gas constant (R) is same for all gases. What is its physical significance ?

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Unit of R depends upon those units in which p, V and T are measured as, `R=(pV)/(nT)`. If pressure is measured in Pascal, per mole volume is measured in `m^(3)` and temperature is measured in kelvin then units of 'R' are `"Pam"^(3)K^(-1)"mol"^(-1)` or `J mol"^(-1)K^(-1)`. Since joule is the unit of work done, so 'R' is work done by the gas per mole per kelvin.
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