题目37.[单选题](1分)-|||-化学反应的恒压热Qn与恒容热Qy之间的换算关系为 () 。-|||-A: _(P)=(Q)_(r)+Delta n(g)RT : B: _(P)=(Q)_(V)-Delta n(g)RT ; C: _(P)=(Q)_(V)-|||-A.B-|||-B.C-|||-C.A题目解答答案A. ${Q}_{P}={Q}_{Y}+\Delta n(g)RT$