Question

Assertion: The inversion of cane sugar \[\ce{(C12H22O11 + H2O ->[H+] C6H12O6 + C6H12O6)}\] is a pseudo first order reaction.

Reason: The reaction is catalysed by a dilute mineral acid, e.g., HCl.

Options

• If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion.

• If both Assertion and Reason are CORRECT but Reason is not the CORRECT explanation of the Assertion.

• If Assertion is CORRECT but Reason is INCORRECT.

• If Assertion is INCORRECT but Reason is CORRECT.

Answer 1

If both Assertion and Reason are CORRECT but Reason is not the CORRECT explanation of the Assertion.

Explanation:

The inversion of cane sugar is a pseudo first-order reaction because water is present in large excess, so its concentration remains nearly constant and the rate depends only on sugar. The reaction is indeed catalysed by a dilute mineral acid (e.g., HCl), but this is not the reason for its pseudo-first-order nature.