Question

Name the following : the component of a naphthalene-sodium chloride mixture , which remains in the evaporating dish when heated together , covered with a funnel .

Answer 1

Answer:

Sodium chloride.

Explanation:

Naphthalene is a sublimate, i.e, it is a substance which undergoes sublimation, which is the process of conversion of a substance directly from solid to vapour upon heating. Thus when the naphthalene-sodium chloride mixture is heated, the naphthalene turns into vapour and only sodium chloride is left.