Chemistry 0620 · IGCSE · Alcohols

Alcohols — practice question

Ethanol belongs to the homologous series of alcohols.
(a)[2]

Give two features of compounds in a homologous series.

(b)[2]

Complete the dot-and-cross diagram to show the electron arrangement in a molecule of ethanol. Include only outer shell electrons.

(c(i))[1]

Write a chemical equation for producing ethanol by the catalytic addition of steam to ethene.

(c(ii))[1]

Write a chemical equation for the production of ethanol by the fermentation of glucose, C$_6$H$_{12}$O$_6$.

(c(iii))[1]

State one advantage of making ethanol by catalytic addition of steam to ethene. Do not refer to cost.

(c(iv))[1]

State one advantage of making ethanol by fermentation of glucose. Do not refer to cost.

(d)[1]

Ethanol can be oxidised to ethanoic acid. State the chemical reagent required to oxidise ethanol to ethanoic acid.

(e(i))[2]

Draw the structure of the organic compound produced. Show every atom and every bond.

(e(ii))[1]

State the name of the organic compound produced.

(e(iii))[1]

Which homologous series includes the organic compound formed?

(f(i))[1]

What does the term weak mean when it is used for acids?

(f(ii))[3]

Describe how a crystalline sample of copper(II) ethanoate can be prepared from ethanoic acid and copper(II) carbonate.

(f(iii))[1]

Write the word equation for the reaction of ethanoic acid with copper(II) carbonate.

Worked solution & mark scheme

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