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ddddddddddddddddddddddddddddddddddddddddd1) the melting point obtained in the experiment is usually lower than the literature value.What are the reasons for this?What improvements could be made?
2)What criteria are usually used to judge whether a preparation method is good?Comment on the suitability of the above experiment to be employed as a preparatory method for benzoic acid.
1) This physical phenomenon is called "melting point depression". Since impurities in the analyzed substance will
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