Chemistry 0620 · IGCSE · Alcohols

Alcohols — practice question

Ethanol may be made either by fermentation or by reacting ethene with steam.
(a)[5]

Describe the manufacture of ethanol by fermentation and from ethene. Include the key conditions needed for each reaction, together with one or more suitable word equations.

(b(i))[2]

Deduce the state of methanol at room temperature. Explain your answer.

(b(ii))[1]

Predict the boiling point for pentanol.

(b(iii))[1]

Describe the way relative viscosity changes as the number of carbon atoms in the alcohol increases.

(c(i))[2]

Draw ethanol's structure. Show every atom and every bond.

(c(ii))[1]

Give one important use of ethanol.

Worked solution & mark scheme

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