1.以NA代表阿伏伽德罗常数,则关于热化学方程式C2H2(g) + 5/2 O2(g)=== 2 CO2 +H2O(l) δH=-1300 kJ/mol的说法中,正确的是( )A.当10NA个电子转移时,该反应放出1300KJ的热量B.当1NA个水分子生成且为液体时,该

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