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Ethanol can be prepared more easily by which reaction?
(i) CH3CH2Br + H2O → CH3CH2OH
(ii) CH3CH2 Br + Ag2O (in boiling water) → CH3CH2OH
- a)by (i) reaction
- b)by (ii) reaction
- c)Both reactions proceed at same rate
- d)by none
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Ethanol can be prepared more easily by which reaction?(i) CH3CH2Br + ...
Heavy metal ions, particularly Ag+, catalyse SN1 reaction because of presence of empty orbital.
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Ethanol can be prepared more easily by which reaction?(i) CH3CH2Br + ...
The correct answer is option 'B' - ethanol can be prepared more easily by the (ii) reaction: CH3CH2Br + Ag2O (in boiling water) → CH3CH2OH.
Explanation:
Ethanol, also known as ethyl alcohol, is a commonly used alcohol that can be prepared by the reaction of an alkyl halide with water or by the reaction of an alkyl halide with a metal oxide in the presence of water.
(i) CH3CH2Br + H2O → CH3CH2OH
This reaction involves the substitution of the bromine atom in CH3CH2Br with a hydroxyl group from water. It is a nucleophilic substitution reaction. However, this reaction is relatively slow and requires high temperatures and the presence of a strong base.
(ii) CH3CH2Br + Ag2O (in boiling water) → CH3CH2OH + AgBr
In this reaction, the alkyl halide CH3CH2Br reacts with a metal oxide (Ag2O) in the presence of boiling water. The metal oxide acts as a base and facilitates the substitution of the bromine atom with a hydroxyl group. The resulting product is ethanol and a precipitate of silver bromide.
Comparison:
- Ease of preparation: The (ii) reaction is more easily prepared compared to the (i) reaction. The use of a metal oxide as a base in the (ii) reaction allows for faster and more efficient conversion of the alkyl halide to ethanol.
- Reaction conditions: The (i) reaction requires high temperatures and the presence of a strong base to proceed at a reasonable rate. In contrast, the (ii) reaction can be carried out at boiling water temperature, which is relatively mild.
- Reaction rate: The (ii) reaction proceeds at a faster rate compared to the (i) reaction. The presence of a metal oxide as a base enhances the nucleophilic substitution reaction, resulting in a higher reaction rate.
Overall, the (ii) reaction is a more efficient and convenient method for the preparation of ethanol compared to the (i) reaction.
Explanation:
Ethanol, also known as ethyl alcohol, is a commonly used alcohol that can be prepared by the reaction of an alkyl halide with water or by the reaction of an alkyl halide with a metal oxide in the presence of water.
(i) CH3CH2Br + H2O → CH3CH2OH
This reaction involves the substitution of the bromine atom in CH3CH2Br with a hydroxyl group from water. It is a nucleophilic substitution reaction. However, this reaction is relatively slow and requires high temperatures and the presence of a strong base.
(ii) CH3CH2Br + Ag2O (in boiling water) → CH3CH2OH + AgBr
In this reaction, the alkyl halide CH3CH2Br reacts with a metal oxide (Ag2O) in the presence of boiling water. The metal oxide acts as a base and facilitates the substitution of the bromine atom with a hydroxyl group. The resulting product is ethanol and a precipitate of silver bromide.
Comparison:
- Ease of preparation: The (ii) reaction is more easily prepared compared to the (i) reaction. The use of a metal oxide as a base in the (ii) reaction allows for faster and more efficient conversion of the alkyl halide to ethanol.
- Reaction conditions: The (i) reaction requires high temperatures and the presence of a strong base to proceed at a reasonable rate. In contrast, the (ii) reaction can be carried out at boiling water temperature, which is relatively mild.
- Reaction rate: The (ii) reaction proceeds at a faster rate compared to the (i) reaction. The presence of a metal oxide as a base enhances the nucleophilic substitution reaction, resulting in a higher reaction rate.
Overall, the (ii) reaction is a more efficient and convenient method for the preparation of ethanol compared to the (i) reaction.
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Ethanol can be prepared more easily by which reaction?(i) CH3CH2Br + H2O → CH3CH2OH(ii) CH3CH2 Br + Ag2O (in boiling water) → CH3CH2OHa)by (i) reactionb)by (ii) reactionc)Both reactions proceed at same rated)by noneCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Ethanol can be prepared more easily by which reaction?(i) CH3CH2Br + H2O → CH3CH2OH(ii) CH3CH2 Br + Ag2O (in boiling water) → CH3CH2OHa)by (i) reactionb)by (ii) reactionc)Both reactions proceed at same rated)by noneCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Ethanol can be prepared more easily by which reaction?(i) CH3CH2Br + H2O → CH3CH2OH(ii) CH3CH2 Br + Ag2O (in boiling water) → CH3CH2OHa)by (i) reactionb)by (ii) reactionc)Both reactions proceed at same rated)by noneCorrect answer is option 'B'. Can you explain this answer?.
Ethanol can be prepared more easily by which reaction?(i) CH3CH2Br + H2O → CH3CH2OH(ii) CH3CH2 Br + Ag2O (in boiling water) → CH3CH2OHa)by (i) reactionb)by (ii) reactionc)Both reactions proceed at same rated)by noneCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Ethanol can be prepared more easily by which reaction?(i) CH3CH2Br + H2O → CH3CH2OH(ii) CH3CH2 Br + Ag2O (in boiling water) → CH3CH2OHa)by (i) reactionb)by (ii) reactionc)Both reactions proceed at same rated)by noneCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Ethanol can be prepared more easily by which reaction?(i) CH3CH2Br + H2O → CH3CH2OH(ii) CH3CH2 Br + Ag2O (in boiling water) → CH3CH2OHa)by (i) reactionb)by (ii) reactionc)Both reactions proceed at same rated)by noneCorrect answer is option 'B'. Can you explain this answer?.
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