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间歇反应器中反应的实验研究 醋酐稀水溶液的液相水解是二级不可逆反应： (CH 3 CO) 2 O+H 2 O→2CH 3 COOH 在15℃下将200L浓度为2.16×10 -4 mol/cm 3 的醋酐溶液加入间歇反应器进行水解。反应混合物的密度假没为常数1.05g/cm 3 。在不同温度下速率可表达为： T(℃) 10 15 25 40 (-r A )mol(cm 3 ·min) 0.0567c A 0.0806c A 0.1580c A 0.380c A 式中c A 为醋酐的浓度，单位是mol/cm 3 。求： (1)解释该反应为二级反应，为什么反应速率可以用表中所列方式表达? (2)倘若在15℃下等温操作，当醋酐的转化率为0.7时，需要多少时间? (3)确定反应速率表。
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