MHT CET · Chemistry · Aldehydes and Ketones

Identify the products of following reaction:
Methanal + Benzene carbaldehyde \(\underset{\text { i. conc. } \mathrm{NaOH}^{\mathrm{i}}}{\stackrel{\text { i. } \mathrm{H}_3 \mathrm{O}^{+}}{\longrightarrow}}\)

A Methanoic acid and phenyl methanol
B Methanol and benzoic acid
C Methanol and phenol
D Methanoic acid and phenol

Verified Solution

Answer & Solution

Correct Answer

(A) Methanoic acid and phenyl methanol

Step-by-step Solution

Detailed explanation

When a mixture of methanal and benzene carbaldehyde (aldehyde with no \(\alpha\)-hydrogen) is treated with a strong base, methanal is oxidized to methanoic acid while benzene carbaldehyde is reduced to phenyl methanol.

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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Identify the products of following reaction:Methanal + Benzene carbaldehyde \(\underset{\text { i. conc. } \mathrm{NaOH}^{\mathrm{i}}}{\stackrel{\text { i. } \mathrm{H}_3 \mathrm{O}^{+}}{\longrightarrow}}\)

Step-by-step Solution

Identify the products of following reaction:
Methanal + Benzene carbaldehyde \(\underset{\text { i. conc. } \mathrm{NaOH}^{\mathrm{i}}}{\stackrel{\text { i. } \mathrm{H}_3 \mathrm{O}^{+}}{\longrightarrow}}\)