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A student observed the melting point of 4-methoxychalcone to be 63-70oC. Which o

ID: 857463 • Letter: A

Question

A student observed the melting point of 4-methoxychalcone to be 63-70oC. Which of the following is (are) plausible explanation for this observation? Answer A. product was pure. B. product has small amount of side products. C. product was not dried completely before taking the melting point. D. product was very cold when the student started taking the melting point. E. product was not recrystallized successfully.

I know that B and C are correct, but there should be one more. I am just not sure which one. Help please!!

Explanation / Answer

following is (are) possible explanation for this observation

B. product has small amount of side products.

C. product was not dried completely before taking the melting point.

E. product was not recrystallized successfully.