The difference between two specific
heats, CP and CV for a gas represents ________
.
increase in kinetic energy
of gas molecules
increase in potential
energy of gas molecules
external work done
increase in volume
external work done
Therefore,
the difference between two specific heat, CP
and CV for a gas
represents external work done.
Hence, the correct option is (C).
&Key Points:-
Equation,
CP – CV = R is
valid when all the three quantities are measured either in units of work or heat
energy. If CP and CV are measured in usual
units of heat energy (Cal/mole-K) and R
in the unit of work (joule/mole-K), then equation takes the form CP – CV = R / Joule
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