题目

下列说法或表示法正确的是                                                                           A．等量的硫蒸气和硫固体分别完全燃烧，后者放出热量多 B．由C(石墨)→C(金刚石)  ΔH = +119 kJ·mol—1可知，石墨比金刚石稳定 C．在稀溶液中：H++OH－===H2O  ΔH = －57.3 kJ· mol—1，若将含1mol CH3COOH的醋酸溶液与含1 mol NaOH的溶液混合，放出的热量小于57.3 kJ D．在101 kPa时，2 g H2完全燃烧生成液态水，放出285.8 kJ热量，氢--Do you know Wang Nan wasn’t first in the singles? --             I thought she would never lose a game． A. Really?    B. Great!    C. All right．  D. No problem．