DP Chemistry (first assessment 2025)

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Question 19M.2.SL.TZ2.2a

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Date May 2019 Marks available [Maximum mark: 2] Reference code 19M.2.SL.TZ2.2a
Level SL Paper 2 Time zone TZ2
Command term Explain Question number a Adapted from N/A
a.
[Maximum mark: 2]
19M.2.SL.TZ2.2a
(a)

Explain why, as the reaction proceeds, the pressure increases by the amount shown.

[2]

Markscheme

increase in the amount/number of moles/molecules «of gas»     [✔]

from 2 to 3/by 50 %     [✔]

Examiners report

Students were able in general to relate more moles of gas to increase in pressure.

Syllabus sections