滴定次数 | NaOH溶液体积/mL | 滴定消耗滤液体积/mL |
1 | 25.00 | 20.02 |
2 | 25.00 | 17.10 |
3 | 25.00 | 19.98 |
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.P(s)+ 3/2 Cl2(g)="==" PCl3(g);△H=" —306" kJ/mol(反应热) |
D.2NO2==O2+2NO;△H=" +" 116.2kJ/mol(反应热) |
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