A.①④⑤⑦ | B.②③⑥ | C.①②④⑦ | D.②④⑥⑦ |
A.①② | B.①③ |
C.①②③ | D.全部 |
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(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.(1) (2) (6) | B.(1) (2) (4) (6) | C.(2) (5) (6) | D.(2) (4) ( 6) |
A.2H2(g)+O2(g) ="=" 2H2O(1)△H= ―285.8kJ/mol |
B.2H2(g)+ O2(g) ="=" 2H2O(1)△H= +571.6 kJ/mol |
C.2H2(g)+O2(g) ="=" 2H2O(g)△H= ―571.6 kJ/mol |
D.H2(g)+ 1∕2O2(g) ="=" H2O(1)△H= ―285.8kJ/mol |
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