| Date | May 2015 | Marks available | 1 | Reference code | 15M.1.hl.TZ1.21 |
| Level | HL | Paper | 1 | Time zone | TZ1 |
| Command term | Question number | 21 | Adapted from | N/A |
Question
Consider the rate expression:
\[{\text{Rate}} = k{\text{[X][Y]}}\]
Which change decreases the value of the rate constant, \(k\)?
A. Increase in the reaction temperature
B. Decrease in the reaction temperature
C. Increase in the concentration of X and Y
D. Decrease in the concentration of X and Y
Markscheme
B
Examiners report
[N/A]
Syllabus sections
Additional higher level (AHL) » Topic 16: Chemical kinetics » 16.1 Rate expression and reaction mechanism
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