Which product is not obtained when {CH}₃{CH}₂{OH} reacts with {H}₂{SO}₄?

Correct Answer is : CH≡CH{CH} {CH}CH≡CH

Correct Answer is : CH≡CH{CH} {CH}CH≡CH

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GUJCET 2026 Chemistry Paper

Question : 22 of 40

Marks: +1, -0

\text{CH}_3\text{CH}_2\text{OH}

\text{H}_2\text{SO}_4

Solution:

Concept:

Concentrated

\mathrm{H_2SO_4}

dehydrates ethanol, and the product depends on temperature.

Explanation:

443\ \mathrm{K}

, ethanol gives ethene:

\mathrm{CH_3CH_2OH} \xrightarrow{\mathrm{H_2SO_4},\ 443\ \mathrm{K}} \mathrm{CH_2=CH_2} + \mathrm{H_2O}

413\ \mathrm{K}

, two ethanol molecules form diethyl ether:

2\mathrm{CH_3CH_2OH} \xrightarrow{\mathrm{H_2SO_4},\ 413\ \mathrm{K}} \mathrm{C_2H_5OC_2H_5} + \mathrm{H_2O}

Ethyl hydrogen sulfate,

\mathrm{C_2H_5HSO_4}

, is formed as an intermediate.

Acetylene,

\mathrm{CH\equiv CH}

, is not obtained in this reaction.

Answer:

The product not obtained is acetylene,

\mathrm{CH\equiv CH}

(Option B).

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