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A compound A has a molecular formula C2C...

A compound A has a molecular formula C2Cl3OH. It reduces Fehling solution and on oxidation gives a monocarboxylic acid (B). A is obtained by action of chlorine on ethyl alcohol. A is :

A

Methyl chloride

B

Monochloroacetic acid

C

Chloral

D

Chloroform

Text Solution

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The correct Answer is:
To solve the problem, we need to identify the compound A with the molecular formula C2Cl3OH, which reduces Fehling's solution and on oxidation gives a monocarboxylic acid (B). Additionally, we know that A is obtained by the action of chlorine on ethyl alcohol. ### Step-by-Step Solution: 1. **Identify the Molecular Formula**: The molecular formula of compound A is given as C2Cl3OH. This indicates that the compound contains 2 carbon atoms, 3 chlorine atoms, 1 oxygen atom, and 1 hydrogen atom. 2. **Determine the Functional Group**: The fact that compound A reduces Fehling's solution suggests that it contains an aldehyde functional group. Aldehydes are known to reduce Fehling's solution, which is a test for the presence of aldehydes. 3. **Oxidation to a Monocarboxylic Acid**: The problem states that upon oxidation, compound A gives a monocarboxylic acid (B). Aldehydes can be oxidized to form carboxylic acids. Therefore, we can conclude that compound A must be an aldehyde. 4. **Formation from Ethyl Alcohol**: The question mentions that compound A is obtained by the action of chlorine on ethyl alcohol (C2H5OH). When ethyl alcohol is treated with chlorine, it can undergo chlorination. 5. **Chlorination Reaction**: The chlorination of ethyl alcohol can proceed in two steps: - In the first step, ethyl alcohol reacts with chlorine to form chloroethyl alcohol (C2H4ClOH). - In the second step, further chlorination can occur, leading to the formation of chloral (CCl3CHO), which is a trichloroacetaldehyde. 6. **Identify Compound A**: Given the molecular formula C2Cl3OH and the fact that it is an aldehyde that can be oxidized to a monocarboxylic acid, we can identify compound A as chloral (CCl3CHO). 7. **Conclusion**: Therefore, the correct answer is that compound A is chloral. ### Final Answer: A is chloral.
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