Consider the reactions, Identify A, X, Y and Z. Aldehydes, Ketones and Carboxylic [2017]

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Q.
Consider the reactions,

Identify A, X, Y and Z. [2017]

1 A – Methoxymethane, X – Ethanol, Y – Ethanoic acid, Z – Semicarbazide.

2 A – Ethanal, X – Ethanol, Y – But-2-enal, Z – Semicarbazone.

3 A – Ethanol, X – Acetaldehyde, Y – Butanone, Z – Hydrazone.

4 A – Methoxymethane, X – Ethanoic acid, Y – Acetate ion, Z – Hydrazine.

Ans.
(2)

Since, A gives silver mirror test, it must be an aldehyde and aldehydes are formed by oxidation of 1° alcohols. Thus, ‘X’ is a 1° alcohol, i.e., ${CH}_{3} {CH}_{2} OH .$

Solution

Q.
Consider the reactions,

Identify A, X, Y and Z. [2017]

1 A – Methoxymethane, X – Ethanol, Y – Ethanoic acid, Z – Semicarbazide.

2 A – Ethanal, X – Ethanol, Y – But-2-enal, Z – Semicarbazone.

3 A – Ethanol, X – Acetaldehyde, Y – Butanone, Z – Hydrazone.

4 A – Methoxymethane, X – Ethanoic acid, Y – Acetate ion, Z – Hydrazine.

Ans.
(2)

Since, A gives silver mirror test, it must be an aldehyde and aldehydes are formed by oxidation of 1° alcohols. Thus, ‘X’ is a 1° alcohol, i.e., ${CH}_{3} {CH}_{2} OH .$

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Solution

Q. Consider the reactions, Identify A, X, Y and Z. [2017]

1 A – Methoxymethane, X – Ethanol, Y – Ethanoic acid, Z – Semicarbazide.

2 A – Ethanal, X – Ethanol, Y – But-2-enal, Z – Semicarbazone.

3 A – Ethanol, X – Acetaldehyde, Y – Butanone, Z – Hydrazone.

4 A – Methoxymethane, X – Ethanoic acid, Y – Acetate ion, Z – Hydrazine.

Ans. (2) Since, A gives silver mirror test, it must be an aldehyde and aldehydes are formed by oxidation of 1° alcohols. Thus, ‘X’ is a 1° alcohol, i.e., CH3CH2OH.

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Q.
Consider the reactions,

Identify A, X, Y and Z. [2017]

Ans.
(2)

Since, A gives silver mirror test, it must be an aldehyde and aldehydes are formed by oxidation of 1° alcohols. Thus, ‘X’ is a 1° alcohol, i.e., ${CH}_{3} {CH}_{2} OH .$