试题与答案

下列热化学方程式数学正确的是(的绝对值均正确) A.C2H5OH(l)+3O2(

题型:选择题

题目:

下列热化学方程式数学正确的是(的绝对值均正确)

A.C2H5OH(l)+3O2(g)==2CO2(g)+3H2O(g);△H=—1367.0 kJ/mol(燃烧热)

B.NaOH(aq)+HCl(aq)==NaCl(aq)+H2O(l);△H=+57.3kJ/mol(中和热)

C.S(s)+O2(g)===SO2(g);△H=—269.8kJ/mol(反应热)

D.2NO2==O2+2NO;△H=+116.2kJ/mol(反应热)

答案:

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