Chemistry 5070 · O Level · Alcohols

Alcohols — practice question

Methanol, propan-1-ol and propan-2-ol belong to the alcohol family. Fig. 7.1 shows the displayed formulae for methanol and propan-1-ol.
(a)[1]

State the general formula for the homologous series of alcohols.

(b(i))[1]

State the term used for compounds that have the same molecular formula but different structural formulae.

(b(ii))[1]

Draw the structural formula that represents propan-2-ol.

(c)[1]

State why propan-1-ol is classified as a saturated compound.

(d)[1]

State why propan-1-ol does not count as a hydrocarbon.

(e(i))[1]

Draw the displayed formula for the product formed when propan-1-ol reacts with acidified aqueous potassium manganate(VII).

(e(ii))[1]

Draw the displayed formula for the product when propan-1-ol reacts with ethanoic acid in the presence of a catalyst.

(f(i))[2]

Draw a dot-and-cross diagram to show the bonding in a methanol molecule. Show only the outer-shell electrons of each atom.

(f(ii))[1]

State why methanol cannot conduct electricity.

(g)[1]

Methanol is used as a solvent. State the meaning of solvent.

Worked solution & mark scheme

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