Halogen Compound

X and Y are reagents required to convert 1-bromopropane into buranoic acid. What are identities of X and Y?

• X=NH3 Y=HCl(aq)

• X=KCN in C2H5OH Y=NaOH(aq)

• X=KCN in C2H5OH Y=HCl(aq)

• X=HCN Y=NaOH(aq)

What could be reagent X and Y?

• X=KCN in ethanol Y=HCl(aq)

• X=KCN in ethanol Y=NaOH(aq)

• X=NH3 in ethanol Y=HCl(aq)

• X=NaOH(aq) Y=H+/Cr2O7 2-(aq)

Equal volumes of aqueous silver nitrate were added to separate small volumes of bromoethane and iodoethane in two test-tubes. The test-tubes were shaken.

• A

• B

• C

• D

Which statement is correct?

• A. The mechanism is Sn1, due to the stabilisation of an intermediate anion by three alkyl groups.

• B. The mechanism is Sn1, due to the stabilisation of an intermediate cation by three alkyl groups

• C. The mechanism is Sn2, due to the stabilisation of an intermediate anion by three alkyl groups.

• D. The mechanism is Sn2, due to the stabilisation of an intermediate cation by three alkyl groups.

What could be X?

• A. 1-chlorobutane

• B. 1-iodobutane

• C. 2-chloro-2-methylpropane

• D. 2-iodo-2-methylpropane

A reaction occurs when a sample of 1-chloropropane is heated under reflux with sodium hydroxide dissolved in ethanol.

Which row is correct?

• A

• B

• C

• D

What could be X?

• A. 1-chlorobutane

• B. 1-iodobutane

• C. 2-chloro-2-methylpropane

• D. 2-iodo-2-methylpropane

choose

• A

• B

• C

• D

A tertiary bromoalkane, indicated here by C-Br, reacts with aqueous NaOH. The mechanism has the reaction pathway shown

Which point in the diagram is correctly identified?.

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• 
• 
• 

Bromoethane and chloroethane are added separately to water. Hydrolysis reactions occur.

Which compound hydrolyses more rapidly and what is the mechanism?

• A

• B

• C

• D