An introduction to AS Level organic chemistry — Chemistry 9701 AS & A Level Question & Worked Solution

(a(i))[1]

From the list, identify a species able to react with ethane.

(a(ii))[1]

From the list, identify two species able to attack the $\pi$ bond in ethene.

(a(iii))[2]

From the list, identify a species that can distinguish between solutions of propanoic acid and propan-1-ol. Describe any observations that occur.

(b(i))[1]

$\text{Cl(g)}$ can be produced from $\text{Cl}_2\text{(g)}$. State the conditions needed for this conversion.

(b(ii))[1]

Name the process.

(c(i))[1]

Name an organic functional group that reacts with a nucleophile in an addition reaction.

(c(ii))[1]

Name an organic functional group that tends to react with a nucleophile by an $\text{S}_\text{N}1$ substitution mechanism.

(d(i))[2]

But-1-ene reacts with steam in the presence of concentrated phosphoric acid to produce two isomers with molecular formula $\text{C}_4\text{H}_{10}\text{O}$. The two reactions proceed through different intermediate ions. Draw the structure of both intermediate ions.

(d(ii))[2]

Circle the more stable intermediate ion shown in (d)(i). Explain your answer.

An introduction to AS Level organic chemistry — practice question

Worked solution & mark scheme