DP Chemistry (first assessment 2025)

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Question 23M.1A.SL.TZ2.29

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1A.SL.TZ2.29
Level SL Paper 1A Time zone TZ2
Command term Question number 29 Adapted from N/A
29.
[Maximum mark: 1]
23M.1A.SL.TZ2.29

The following graph shows the concentration of C4H9Cl versus time.


What is the average rate of reaction over the first 800 seconds?


A.  1 × 10−3 mol dm−3 s−1

B.  1 × 10−4 mol dm−3 s−1

C.  2 × 10−3 mol dm−3 s−1

D.  2 × 10−4 mol dm−3 s−1

[1]

Markscheme

B