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Acetaldehyde and acetylene can not be distinguished by :
- a)Tollen’s reagent
- b)Fehling solution
- c)Lucas reagent
- d)Iodoform test
Correct answer is option 'C'. Can you explain this answer?
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Acetaldehyde and acetylene can not be distinguished by :a)Tollen&rsquo...
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Acetaldehyde and acetylene can not be distinguished by :a)Tollen&rsquo...
**Explanation:**
**Tollen’s reagent**
- Tollen's reagent is used to distinguish between aldehydes and ketones.
- Acetaldehyde will give a positive test with Tollen's reagent, forming a silver mirror, while acetylene will not react with Tollen's reagent.
**Fehling solution**
- Fehling solution is also used to differentiate between aldehydes and ketones.
- Acetaldehyde will give a positive test with Fehling solution, forming a red precipitate of Cu2O, while acetylene will not react with Fehling solution.
**Lucas reagent**
- Lucas reagent is used to distinguish between primary, secondary, and tertiary alcohols.
- Acetaldehyde and acetylene will both not react with Lucas reagent since they are not alcohols.
**Iodoform test**
- The iodoform test is used to detect the presence of a methyl ketone or a secondary alcohol.
- Acetaldehyde will give a positive iodoform test, forming a yellow precipitate of iodoform, while acetylene will not react with the iodoform test.
Therefore, among the given options, Lucas reagent is the one that cannot be used to distinguish between acetaldehyde and acetylene because both compounds do not react with Lucas reagent.
**Tollen’s reagent**
- Tollen's reagent is used to distinguish between aldehydes and ketones.
- Acetaldehyde will give a positive test with Tollen's reagent, forming a silver mirror, while acetylene will not react with Tollen's reagent.
**Fehling solution**
- Fehling solution is also used to differentiate between aldehydes and ketones.
- Acetaldehyde will give a positive test with Fehling solution, forming a red precipitate of Cu2O, while acetylene will not react with Fehling solution.
**Lucas reagent**
- Lucas reagent is used to distinguish between primary, secondary, and tertiary alcohols.
- Acetaldehyde and acetylene will both not react with Lucas reagent since they are not alcohols.
**Iodoform test**
- The iodoform test is used to detect the presence of a methyl ketone or a secondary alcohol.
- Acetaldehyde will give a positive iodoform test, forming a yellow precipitate of iodoform, while acetylene will not react with the iodoform test.
Therefore, among the given options, Lucas reagent is the one that cannot be used to distinguish between acetaldehyde and acetylene because both compounds do not react with Lucas reagent.
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Acetaldehyde and acetylene can not be distinguished by :a)Tollen’s reagentb)Fehling solutionc)Lucas reagentd)Iodoform testCorrect answer is option 'C'. Can you explain this answer?
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