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) |
A.N2(g)+3H2(g)=2NH3(1); △H=2(a-b-c)kJ·mol-1 |
B.N2(g)+3H2(g)=2NH3(g); △H=2(b-a)kJ·mol-1 |
C.N2(g)+H2(g)=NH3(1); △H=(b+c-a)kJ·mol-1 |
D.N2(g)+H2(g)=NH3(g); △H=(a+b)kJ·mol-1 |
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