Question

Describe how you can identify an unknown substance by the mixture melting point technique.

Answer 1

Melting point provide the information about the purity and identity of the solid chemical compound.

In mixture melting point technique, If an unknow solid sample is known to be any one of the two possible known compounds.The unknown compound can be mixed with one of the known compounds and a melting point is taken of the mixture. If the melting point range is lowered and widened, it means that the two are different compounds. If the melting point stays the same it means that the two compounds are likely identical.