Value of universal gas constant (R) isa same for all gases. What is its physical significance?
Unit of R depends upon those in which p, V and T are measured as, R=pVnT. If pressure is measured in Pascal, per mole volume is measured in m3) and temperature is measured in Kelvin then units of 'R' are Pa m3K−1mol−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.