CAIE A-Level Chemistry A2 36.1.3 Analyse Questions

Practise analysing synthetic routes by identifying reaction types, reagents, conditions and possible by-products at each step.

Exam points

analyse reaction types and reagents used in each synthetic step
identify suitable conditions and possible by-products
interpret complete synthetic routes from starting material to target product

[Maximum number: 5]

(a)

3-aminobenzoic acid can be synthesised from methylbenzene in three steps. methylbenzene

Figure for Question (a) — CAIE A-Level Chemistry A2

[ 5 ]

(i)

Draw the structures of M and N in the boxes.

[ 2 ]

(ii)

Suggest reagents and conditions for each step of the synthesis. step 1
step 2
step 3

[ 3 ]

M1: step 1 hot $\mathrm{KMnO}_{4} / \mathrm{MnO}_{4}{ }^{-}$

M2: step 2 conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$ and conc. $\mathrm{HNO}_{3}$

M3: step 3 Sn and conc. HCl (heat)

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CAIE A-Level Chemistry A2 36.1.3 Analyse Questions question 1

Question (a)

Question (i)

Question (ii)