DP Chemistry (last assessment 2024)

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Question 19M.2.sl.TZ2.c

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.sl.TZ2.c
Level sl Paper 2 Time zone TZ2
Command term Suggest Question number c Adapted from N/A
c.
[Maximum mark: 1]
19M.2.sl.TZ2.c

Dinitrogen monoxide, N2O, causes depletion of ozone in the stratosphere.

Suggest why it is surprising that dinitrogen monoxide dissolves in water to give a neutral solution.

[1]

Markscheme

oxides of nitrogen/non-metals are «usually» acidic  [✔]

Examiners report

Only a quarter of the candidates answered correctly. Some simply stated that N2O forms HNO3 with water which did not gain the mark.

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