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  4. In Mayer's relation, CP-CV=R 'R' stands for

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Q. In Mayer's relation, $C_{P}-C_{V}=R$

'R' stands for

NTA AbhyasNTA Abhyas 2020Thermodynamics

Solution:

PV = RT (For 1 mol) …(i)

$P\left(V + \Delta V\right)=R\left(T + 1\right)$ …(ii)

From equation (i) and (ii),

$P\Delta V=R$

i.e., W = R (work done).