試題詳解

8. Calculate the enthalpy of the reaction P_4(s) + 10Cl_2(g) → 4PCl_5(s) from the reactions: P_4(s) + 6Cl_2(g) → 4PCl_3(l) △ H= -1278.8KJ PCl_3(l) + Cl_2(g) → PCl_5(s) △ H= -124KJ
(A)1.154
(B)-1.775
(C)-1.154
(D)2.433
(E)1.503MJ‧ mol^-1