MHT CET · Chemistry · Chemical Kinetics

Which among the following reactions is can be an example of pseudo first order reaction?

A Inversion of cane sugar
B Decomposition of $H_{2} O_{2}$
C Conversion of cyclopropane to propene
D Decomposition of $N_{2} O_{5}$

Verified Solution

Answer & Solution

Correct Answer

(A) Inversion of cane sugar

Step-by-step Solution

Detailed explanation

C_{12} H_{22} O_{11} + H_{2} O \to \underset{Glucose}{C_{6} H_{12} O_{6}} + \underset{Fructose}{C_{6} H_{12} O_{6}}

H₂O in excess, a rate of reaction depends only on sucrose So Inversion of cane sugar is an example of pseudo-first order reaction.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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