CAIE IGCSE Chemistry 6.4.12 Reducing Agent As a Substance That Questions

Explain why a reducing agent is oxidised while reducing another substance, using electron donation by bromide ions and the ammonia–oxygen reaction.

Exam points

Explain bromide ions’ reducing-agent role through electron donation and their own oxidation
Use the ammonia–oxygen equation to explain oxidation of the agent and reduction of the other reactant

[Maximum number: 1]

Ethanol is manufactured by two methods:
method 1 fermentation of aqueous glucose
method 2 catalytic addition of steam to an alkene.

Ethanol can be converted to ethanoic acid by reacting it with an acidified oxidising agent.

State, in terms of redox, what type of reagent ethanol is in this reaction.

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