◆对于理想气体的等容过程,dW=0 d Q= de =v(i/2rdT C=(1/v(dE/dT) =(6/2RC=28 △E=E2-E1=」m 若在71→72间,Cv近似为常数, △E=vC,△T19 dQ = dE = (i/2)R dT ∴ Cv =(1/)(dE/dT) = (i/2)R R i Cv 2 = 对于理想气体的等容过程, dW = 0 = − = 2 1 2 1 T T E E E CV dT 若在 T1 → T2 间, CV 近似为常数, E = CV T