Question

Two colleagues are measuring the melting point of a substance. They observe two ranges of melting point, at 134-137 °C and 132-136 °C. What are the possible reasons that lead to two different values with exactly the same sample?

Answer 1

Step-by-step explanation:

impurities affect both melting point and boiling point

in the case of melting point it lowers the melting point

so I guess one of the samples Ie contained impurities