DP Chemistry (last assessment 2024)

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Question 17N.1.hl.TZ0.21

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.1.hl.TZ0.21
Level hl Paper 1 Time zone TZ0
Command term Question number 21 Adapted from N/A
21.
[Maximum mark: 1]
17N.1.hl.TZ0.21

The rate expression for the reaction X (g) + 2Y (g) → 3Z (g) is 

rate = k[X]0 [Y]2

By which factor will the rate of reaction increase when the concentrations of X and Y are both increased by a factor of 3?

A. 6

B. 9

C. 18

D. 27

[1]

Markscheme

B

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