prove that cp-cv=R? 

  • 4

delta u= qv =cv delta t

delta h=qp=cp delta t

delta h=delta u+delta(pv)

=delta u+delta(rt)

=delta u+r delta t

applying values in the equation

delta h=delta u+ r delta t

cp delta t=cv delta t+r delta t

dividing the eqn by delta t

cp=cv+r

cp-cv=r

  • 6
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