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Question

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


Solution

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 m3K1mol1 (or) J mol1 K1. Since, joule is the unit of work done, so 'R' is work done by the gas per mole per kelvin.


Chemistry
NCERT Exemplar
Standard XI

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