Chemistry 5070 · O Level · Alcohols

Alcohols — practice question

Alcohols belong to a homologous series with general formula C$_n$H$_{2n+1}$OH. The table gives some details about different alcohols.
(a)[1]

Deduce the molecular formula of the alcohol containing eight carbon atoms.

(b(i))[1]

Describe how the boiling point varies as the number of carbon atoms in the alcohol increases.

(b(ii))[1]

Estimate the density, in g/cm$^3$, of butanol.

(b(iii))[1]

What physical state does pentanol have at room temperature and pressure? Explain your answer.

(c)[2]

How does viscosity vary across the homologous series of alcohols? Explain your answer.

(d)[2]

Construct the equation for the complete combustion of propanol.

(e(i))[2]

Suggest the oxidising agent and state the conditions needed for this reaction.

(e(ii))[1]

Draw the structure of propanoic acid, with every atom and bond shown.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: C₈H₁₈O

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