A.3mL | B.9.5mL | C.15mL | D.27.5mL |
0.78g |
78g/mol |
0.03mol |
4mol/L |
0.11mol |
4mol/L |
A.0.4mol/L | B.0.5mol/L | C.0.6mol/L | D.1mol/L |
A.乙醇和乙酸 | B.葡萄糖和环己烷 |
C.丙烷和乙酸乙酯 | D.乙醛和乙醇 |
A.向苯酚钠溶液中通入少量的CO2;2C6H5O-+CO2+H2O→2C6H5OH+CO32- |
B.已知C(石墨,s)=C(金刚石,s);△H>0,则金刚石比石墨稳定 |
C.含20.0gNaOH的稀溶液与稀盐酸完全中和,放出28.7kJ的热量,则表示该反应的热学化方程式为:NaOH(aq)+HCl(aq)=NaCl(aq)+H2O(1);△H=-57.4kJ•mol-1 |
D.已知2C(s)+2O2(g)=2CO2(g);△H12C(s)+O2(g)=2CO(g);△H2,则△H1>△H2 |
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