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CH3CHO and C6H5CH2CHO can be distinguished chemically by: [2012]

  • a)
    Benedict test

  • b)
    Iodoform test

  • c)
    Tollen’s reagent test

  • d)
    Fehling solution test

Correct answer is option 'B'. Can you explain this answer?
Verified Answer
CH3CHO and C6H5CH2CHO can be distinguished chemically by: [2012]a)Bene...
CH3CHO and C6H5CH2CHO both are aldehydes so they can give the test of Tollen’s reagent, Fehling's solution and Benedict’s solution.


The carbonyl compounds with the structure R-CO-CH3 can only give the Iodoform test.


CH3CHO is the only aldehyde which reacts with NaOH and I2 to give yellow crystals of Iodoform while C6H5CH2CHO doesn’t react with it. 


So, the iodoform test is used to distinguish between CH3CHO and C6H5CH2CHO compounds. 


CH3CHO + 3I+ 4NaOH ⟶ CHI+ HCOONa + 3NaI +3H2O


C6H5CH2CHO + I+ 4NaOH⟶ No reaction.
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Most Upvoted Answer
CH3CHO and C6H5CH2CHO can be distinguished chemically by: [2012]a)Bene...
Tollens reagent is also right because .. Tollens reagent not react with Benzaldehyde..
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Community Answer
CH3CHO and C6H5CH2CHO can be distinguished chemically by: [2012]a)Bene...
Feeling solution also right answer
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CH3CHO and C6H5CH2CHO can be distinguished chemically by: [2012]a)Benedict testb)Iodoform testc)Tollen’s reagent testd)Fehling solution testCorrect answer is option 'B'. Can you explain this answer?
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