Question

multiple choice 1 point
if a mixture of benzoic acid (122 °c) and naphthalene (80 °c) melts at 75 - 85 °c, what does this indicate?
the thermometer is faulty
the mixture is pure
the mixture is a new compound
the mixture shows melting point depression

Explanation:

A mixture's melting point is lower and broader than its pure - component melting points. This is melting - point depression.

Answer:

The mixture shows melting point depression