A liquid was mixed with ethanol and a drop of concentrated `H_(2) SO_(4)` was added. A compound with a fruity smell was formed. The liquid was
A liquid was mixed with ethanol and a drop of concentrated `H_(2) SO_(4)` was added. A compound with a fruity smell was formed. The liquid was
A
`CH_(3)OH`
B
`HCHO`
C
`CH_(3)COCH_(3)`
D
`CH_(3)COOH`
Text Solution
AI Generated Solution
The correct Answer is:
To solve the question, we need to identify the liquid that, when mixed with ethanol and treated with concentrated sulfuric acid (H₂SO₄), produces a compound with a fruity smell. This fruity smell is characteristic of esters, which are formed through the reaction of an alcohol with a carboxylic acid in the presence of an acid catalyst.
### Step-by-Step Solution:
1. **Understanding the Reaction**:
- When an alcohol (ethanol in this case) reacts with a carboxylic acid in the presence of an acid catalyst (concentrated H₂SO₄), an ester is formed. Esters are known for their fruity smells.
2. **Identifying the Options**:
- We have four options to consider:
- A) CH₃OH (Methanol)
- B) HCHO (Formaldehyde)
- C) CH₃COCH₃ (Acetone)
- D) CH₃COOH (Acetic Acid)
3. **Analyzing Each Option**:
- **Option A: CH₃OH (Methanol)** - This is an alcohol, not an acid. Alcohols do not produce esters when reacted with other alcohols.
- **Option B: HCHO (Formaldehyde)** - This is an aldehyde. Aldehydes do not have the carboxylic acid functional group required to form esters with alcohols.
- **Option C: CH₃COCH₃ (Acetone)** - This is a ketone. Ketones do not contain the carboxylic acid functional group and cannot react with alcohols to form esters.
- **Option D: CH₃COOH (Acetic Acid)** - This is a carboxylic acid. It contains the -COOH group, which is necessary for the esterification reaction with ethanol.
4. **Conclusion**:
- Since only acetic acid (CH₃COOH) can react with ethanol to produce an ester, which is responsible for the fruity smell, the liquid must be acetic acid.
### Final Answer:
The liquid was **CH₃COOH (Acetic Acid)**.
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