During the electrolysis of concentrated sodium chloride solution in a Trinidad chemical plant, which gas is produced at the anode?

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Question

During the electrolysis of concentrated sodium chloride solution in a Trinidad chemical plant, which gas is produced at the anode?

Accepted Answer

Chlorine — Award 1 mark for identifying chlorine as the product at the anode from concentrated NaCl solution. D is incorrect — hydrogen is produced at the cathode from water. A is incorrect — oxygen would be produced from dilute solutions where hydroxide ions are preferentially discharged. C is incorrect — nitrogen is not involved in this electrolysis.

Answer

Oxygen

Answer

Hydrogen

Answer

Chlorine

Answer

Nitrogen

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