DP Chemistry (last assessment 2024)

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Question 21M.2.sl.TZ1.d(ii)

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.2.sl.TZ1.d(ii)
Level sl Paper 2 Time zone TZ1
Command term State Question number d(ii) Adapted from N/A
d(ii).
[Maximum mark: 1]
21M.2.sl.TZ1.d(ii)

Hydrogen peroxide can react with methane and oxygen to form methanol. This reaction can occur below 50°C if a gold nanoparticle catalyst is used.

Consider the first stage of the reaction.

CH4 (g) + H2O (g) CO (g) + 3H2 (g)

State the expression for Kc for this stage of the reaction.

[1]

Markscheme

Kc=COH23CH4H2O ✔