Topic 17 Carbonyls (RGSHW)

Last updated over 1 year ago

11 questions

Topic 17 Carbonyls (RGSHW)

Last updated over 1 year ago

11 questions

Question 1

Methyl ester

a

b

c

d

Question 2

Reaction with lithium aluminium tetrahydride and phosphorous (V) chloride.

a

b

c

d

Question 3

Comparison of acyl chloride and carboxylic acid in esterification.

a

b

c

d

Question 4

Single step carboxylic acid synthesis

a

b

c

d

Question 5

Polyester

a

b

c

d

Question 6

Question 7

State what tests you would perform in each case, and the result you would expect, to show that
(i) ethanal contains a carbonyl

Question 8

State what tests you would perform in each case, and the result you would expect, to show that

ethanal is an aldehyde

Question 9

Ethanal reacts with HCN, in the presence of a catalyst of cyanide ions from KCN, to give a cyanohydrin, CH₃CH(OH)CN.

(i) Give the mechanism for this reaction. (3 marks)

Question 10

10.

Explain why it is necessary to use HCN and KCN in this reaction, rather than HCN on its own. (1 mark)

Question 11

11.

Explain why the product mixture from this reaction is not optically active. (2 marks)

Question 1

Methyl ester

a

b

c

d

Question 2

Reaction with lithium aluminium tetrahydride and phosphorous (V) chloride.

a

b

c

d

Question 3

Comparison of acyl chloride and carboxylic acid in esterification.

a

b

c

d

Question 4

Single step carboxylic acid synthesis

a

b

c

d

Question 5

Polyester

a

b

c

d

Question 6

Question 7

State what tests you would perform in each case, and the result you would expect, to show that
(i) ethanal contains a carbonyl

Question 8

State what tests you would perform in each case, and the result you would expect, to show that

ethanal is an aldehyde

Question 9

Ethanal reacts with HCN, in the presence of a catalyst of cyanide ions from KCN, to give a cyanohydrin, CH₃CH(OH)CN.

(i) Give the mechanism for this reaction. (3 marks)

Question 10

10.

Explain why it is necessary to use HCN and KCN in this reaction, rather than HCN on its own. (1 mark)

Question 11

11.

Topic 17 Carbonyls (RGSHW)

Topic 17 Carbonyls (RGSHW)

Methyl ester

Methyl ester

Reaction with lithium aluminium tetrahydride and phosphorous (V) chloride.

Reaction with lithium aluminium tetrahydride and phosphorous (V) chloride.

Comparison of acyl chloride and carboxylic acid in esterification.

Comparison of acyl chloride and carboxylic acid in esterification.

Single step carboxylic acid synthesis

Single step carboxylic acid synthesis

Polyester

Polyester

State what tests you would perform in each case, and the result you would expect, to show that (i) ethanal contains a carbonyl

State what tests you would perform in each case, and the result you would expect, to show that ethanal is an aldehyde

Ethanal reacts with HCN, in the presence of a catalyst of cyanide ions from KCN, to give a cyanohydrin, CH₃CH(OH)CN. (i) Give the mechanism for this reaction. (3 marks)

Explain why it is necessary to use HCN and KCN in this reaction, rather than HCN on its own. (1 mark)

Explain why the product mixture from this reaction is not optically active. (2 marks)

Methyl ester

Methyl ester

Reaction with lithium aluminium tetrahydride and phosphorous (V) chloride.

Reaction with lithium aluminium tetrahydride and phosphorous (V) chloride.

Comparison of acyl chloride and carboxylic acid in esterification.

Comparison of acyl chloride and carboxylic acid in esterification.

Single step carboxylic acid synthesis

Single step carboxylic acid synthesis

Polyester

Polyester

State what tests you would perform in each case, and the result you would expect, to show that (i) ethanal contains a carbonyl

State what tests you would perform in each case, and the result you would expect, to show that ethanal is an aldehyde

Ethanal reacts with HCN, in the presence of a catalyst of cyanide ions from KCN, to give a cyanohydrin, CH₃CH(OH)CN. (i) Give the mechanism for this reaction. (3 marks)

Explain why it is necessary to use HCN and KCN in this reaction, rather than HCN on its own. (1 mark)

Explain why the product mixture from this reaction is not optically active. (2 marks)

State what tests you would perform in each case, and the result you would expect, to show that
(i) ethanal contains a carbonyl

State what tests you would perform in each case, and the result you would expect, to show that

ethanal is an aldehyde

Ethanal reacts with HCN, in the presence of a catalyst of cyanide ions from KCN, to give a cyanohydrin, CH₃CH(OH)CN.

(i) Give the mechanism for this reaction. (3 marks)

State what tests you would perform in each case, and the result you would expect, to show that
(i) ethanal contains a carbonyl

State what tests you would perform in each case, and the result you would expect, to show that

ethanal is an aldehyde

Ethanal reacts with HCN, in the presence of a catalyst of cyanide ions from KCN, to give a cyanohydrin, CH₃CH(OH)CN.

(i) Give the mechanism for this reaction. (3 marks)