DP Chemistry (last assessment 2024)

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Question 18M.3.hl.TZ2.a

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.hl.TZ2.a
Level hl Paper 3 Time zone TZ2
Command term Formulate Question number a Adapted from N/A
a.
[Maximum mark: 1]
18M.3.hl.TZ2.a

Ethanol can be detected by a variety of instruments.

Fuel cells use an electrochemical process to determine the concentration of ethanol.

Formulate the overall equation for this process.

[1]

Markscheme

C2H5OH(g) + O2(g) → CH3COOH(aq) + H2O(l)

 

Accept any correct formula for reactants and products.

[1 mark]

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