CAIE A-Level Chemistry AS 13.1.3 Compounds in the Table on Pages 29 And 30 Questions

Practise linking an organic compound’s functional group to its characteristic physical properties and reactions, using diagnostic tests and structural evidence to identify…

Exam points

Identify the relevant functional group before predicting a characteristic reaction or chemical test.
Use the structure to distinguish bromine-water decolourisation by C=C from Tollens' test for an aldehyde.

[Maximum number: 1]

The formulae of three compounds are shown.

\mathrm{C}_{3} \mathrm{H}_{7} \mathrm{CHO} \quad \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{COCH}_{3} \quad \mathrm{CH}_{2} \mathrm{CHCH}_{2} \mathrm{CH}_{2} \mathrm{OH}

Only one of these compounds will decolourise bromine water. Only one of these compounds will produce a silver mirror with Tollens' reagent.

Which row shows the correct results?

decolourises bromine water

forms a silver mirror with Tollens' reagent

$\mathrm{C}_{3} \mathrm{H}_{7} \mathrm{CHO}$

$\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{COCH}_{3}$

$\mathrm{C}_{3} \mathrm{H}_{7} \mathrm{CHO}$

$\mathrm{CH}_{2} \mathrm{CHCH}_{2} \mathrm{CH}_{2} \mathrm{OH}$

$\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{COCH}_{3}$

$\mathrm{CH}_{2} \mathrm{CHCH}_{2} \mathrm{CH}_{2} \mathrm{OH}$

$\mathrm{C}_{3} \mathrm{H}_{7} \mathrm{CHO}$

All question bank results loaded

CAIE A-Level Chemistry AS 13.1.3 Compounds in the Table on Pages 29 And 30 Questions question 1