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Assertion : Molecular mass of bezxoic acid when determined by colligative properties is found high. Reason : Dimerisation of benzene acid.

Answer»

If both the assertion and reason are true and reason is a true explanation of the assertion.
If both the assertion and reason are true but reason is not the correct explanation of the assertion
If assertion is true but reason is false
If assertion is false but reason is true.

Solution :Colligative property are the properties of solutions containing non-volatilw solute.it is correct that MOLECULES MASS of benzoic acid when determined by colligative properties is FOUND abnormally high.this is because dimerisatio of benzoic acid takes PLACE in solution resulting high MOLECULAR mass.Therefore ,assertion and reason are true and reason is correct explanation.


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