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. None of the above.
b.The sample is not pure compound X.
c.The sample must be a mixture of compound X and isopropanol.
d.The sample is pure compound X.