题目

已知在1×105  Pa，298 K条件下，2 mol氢气燃烧生成液态水放出528 kJ热量,下列表示氢气燃烧的热化学方程式的是                     A．H2O(g) = H2(g)＋1/2 O2(g)     △H＝+264kJ·mol-1 B．2H2(g)+ O2(g)=2H2O(g)         △H＝－528kJ·mol-1 C．H2(g)＋1/2 O2(g)=H2O(l)       △H＝+264 kJ·mol-1 D．H2(g)+ 1/2O2(g)= H2O(l)       △H＝－264kJ·mol-1It ________Children’s Day next Monday.A. is going to B. is going to be C. was