Statement-I : Solubility on n-alcohols in water decreases with increase in molecular weight
Because
Statement-II: The relative proportion of the hydrocarbon part in alcohols increases with increasing molecular weight which permits enhanced hydrogen bond with water.

Options

A. If both the assertion and reason are true statement and reason is correct explanation of the assertion .
B. If both the assertion and reason are true statement but reason is not a correct explanation of the assertion .
C. If the assertion is true but the reason is a false statement.
D. If both assertion and reason are false statements.

Answer

C

Explanation

It is true that solubility of alcohols decreases as the molecular weight of alcohol increase it is due to the fact that bulky alkyl group pumps electron towards electronegative oxygen atom (+I effect ). This increase in electron cloud over oxygen atom, decrease the tendency of formation of hydrogen bond, hence , solubility decreases .