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

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

1.	Value of universal gas constant (R) is same for all gases. What is its physical significance ?
Answer» Solution :From the gas equation, PV=nRT, `R=(pV)/(nT)`. If p is measured in PASCAL, V/n i.e.,molar VOLUME per mole in `m^(3)` and T in kelvin, units of R are Pa `m^(3)K^(-1)mol^(-1)" or J "mol^(-1)K^(-1)`. As joule is the unit of work, R is the work done per mole per kelvin.