A.只有① | B.①和③ | C.①②③⑤ | D.①③④⑤ |
A.C2H2O2 | B.C2H4O | C.CH2O | D.C2H4O2 |
表1 | n(酸)︰n(醇) | 1︰5.0 | 1︰5.5 | 1︰6.0 | 1︰6.5 | 1︰7.0 |
酯化率/% | 95.1 | 96.3 | 97.0 | 97.4 | 97.2 | |
表2 | 时间/h | 0.5 | 1.0 | 2.0 | 3.0 | 5.0 |
酯化率/% | 40.0 | 70.2 | 94.3 | 97.4 | 97.4 | |
表3 | 温度/℃ | 130 | 140 | 145 | 150 | 160 |
酯化率/% | 89.5 | 96.2 | 97.4 | 97.4 | 97.2 |
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