Question

Statement 1:Molecular mass of benzoic acid when determined by colligative properties is found high.
Statement 2:Dimerisation of benzoic acid

• A. If both Statement 1 and Statement 2 are true and the statement 2 is the correct explanation of the statement 1
• B. Ifboth Statement 1 and Statement 2 are true but statement 2 is not the correct explanation of the Statement 1
• C. If Statement 1 is true but Statement 2 is false
• D. If Statement 1 is false but Statement 2 is true

Answer 1

Answer: (A)

Colligative properties are the properties of solutions containing nonvolatile solute. It is correct that molecular mass of benzoic acid when determined by colligative properties is found abnormally high. This is because dimerisation of benzoic takes place in solution resulting high molecular mass. Therefore, assertion and reason are true and reason is correct explanation