Question

Using the first law of thermdynamics prove derive cp-cv=r

Answer 1

hey there !!

we know that :-

=) dH = dE + pdv ------(1)

we also know that
dH = (Cp)dt , dE = (Cv)dt
and pdv = Rdt

so put this in eqn 1

=) (Cp)dt = (Cv)dt + Rdt

=) cancel out "dt " from both the sides 'we get

=) Cp = Cv + R

=) Cp -Cv = R

--------________________________

Hope it helps

Answer 2

hope it's help u......