回复cjf06301发表于:2020/7/16 23:14:10悬赏金额:
20积分 状态:
未解决
原文如下;
weigh out 1 part by mass of phenol(AR) and dissolve in 1 part by mass of 1,2-dichlorobenzene (AR),work to an accuracy of 1% or better in the weighings.(称量等质量的苯酚溶解在等质量的邻二氯苯中,称量的精度达到1%或者更佳)
疑问一;苯酚是固体,是否能直接溶解在邻二氯苯中,如果在邻二氯苯中溶解较慢,能否加热?
疑问二:能否把苯酚直接加热溶解,在热的状态下称量苯酚