Chemistry Class 12 NCERT Solutions: Chapter 11 Alcohols Phenols and Ethers Part 13

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Q: 5. Write structures of the products of the following reactions:

(i)

(ii)

Q 5 ii Methyl(2-oxocyclohexyl ethanoate)

Q 5 Ii Methyl(2-Oxocyclohexyl Ethanoate)

Q 5 ii Methyl(2-oxocyclohexyl ethanoate)

(iii)

Answer:

(i)

Propene to propene 2 ol

Propene to Propene-2-Ol

Propene to propene 2 ol

(ii)

Q 5 ii Ans Methyl(2-oxocyclohexyl ethanoate) is produced Methyal(2-hydroxycyclohexyl) ethanoate.

Q 5 Ii Ans Methyl(2-Oxocyclohexyl Ethanoate) to Methyal Ethanoate.

Q 5 ii Ans Methyl(2-oxocyclohexyl ethanoate) is produced Methyal(2-hydroxycyclohexyl) ethanoate.

(iii)

Q 5 iii Ans 2-Methylbutanal Is Produced 2-Methylbutan-1-ol.

Q 5 Iii Ans 2-Methylbutanal Is Produced 2-Methylbutan-1-Ol.

Q 5 iii Ans 2-Methylbutanal Is Produced 2-Methylbutan-1-ol.

Q: 6. Give structures of the products you would expect when each of the following alcohol reacts with (a) (b) and (c)

(i)

(ii)

Answer:

(a)

(i)

Primary alcohols do not react appreciably with Lucas’ reagent at room temperature.

(ii)

Q 6 (a) (ii) Ans 2-Methylbutan-2-ol (3 Degree) Is Produced 2-Chloro-2-Methylbutane (White Turbidity)

Q 6 (A) (Ii) Ans 2-Methylbutan-2-Ol (3 Degree) 2-Chloro-2-Methylbutane

Q 6 (a) (ii) Ans 2-Methylbutan-2-ol (3 Degree) Is Produced 2-Chloro-2-Methylbutane (White Turbidity)

Tertiary alcohols react immediately with Luca’s reagent

(b)

(i)

Q 6 (b) (i) Ans Butan-1-ol Is Produced 1-Bromobutane

Q 6 (B) (I) Ans Butan-1-Ol Is Produced 1-Bromobutane

Q 6 (b) (i) Ans Butan-1-ol Is Produced 1-Bromobutane

(ii)

Q 6 (b) ii Ans 2-Methylbutan-2-ol(3 Degree) Is Produced 2-Bromo-2-Methylbutane

Q 6 (B) Ii Ans 2-Methylbutan-2-Ol(3 Degree) 2-Bromo-2-Methylbutane

Q 6 (b) ii Ans 2-Methylbutan-2-ol(3 Degree) Is Produced 2-Bromo-2-Methylbutane

(c)

(i)

(ii)

Q 6 (c) (ii) Ans 2-Methylbutan-2-ol Is Produced 2-Chloro-2-Methylbutane

Q 6 (C) (Ii) Ans 2-Methylbutan-2-Ol 2-Chloro-2-Methylbutane

Q 6 (c) (ii) Ans 2-Methylbutan-2-ol Is Produced 2-Chloro-2-Methylbutane

Q: 7. Predict the major product of acid catalysed dehydration of

(i) 1-methylcyclohexanol and

(ii)

Answer:

(i)

Q 7 (i) Ans 1-Methylcyclohexanol Is Produced 1-Methylcyclohexene (Major Product)

Q 7 (I) Ans 1-Methylcyclohexanol to 1-Methylcyclohexene

Q 7 (i) Ans 1-Methylcyclohexanol Is Produced 1-Methylcyclohexene (Major Product)

(ii)