Suppose you have a crude sample of compound X and you attempt to purify it by recrystallization with isopropanol. You run a melting point of your purified sample and find that it is 175-182 °C. (The literature melting point is 190 C). What can you conclude? a b с d The sample is not pure compound X. The sample is pure compound X. The sample must be a mixture of compound X and isopropanol. None of the above.

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