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166°C时,乙二醇与己二酸缩聚,测得不同时间下的羧基反应程度如表: 时间 t/min 12 37 88 170 270 398 596 900 1370 羧基反应程度 0.2470 0.4975 0.6865 0.7894 0.8500 0.8837 0.9084 0.9273 0.9405 1)求对羧基浓度的反应级数,判断自催化或酸催化。 2)求速率常数,浓度以[COOH](mol/kg反应物)计,
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