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Date May 2011 Marks available 1 Reference code 11M.1.hl.TZ1.21
Level HL Paper 1 Time zone TZ1
Command term Deduce Question number 21 Adapted from N/A

Question

Bromine and nitrogen(II) oxide react according to the following equation.

\[{\text{B}}{{\text{r}}_{\text{2}}}{\text{(g)}} + {\text{2NO(g)}} \to {\text{2NOBr(g)}}\]

Which rate equation is consistent with the experimental data?

M11/4/CHEMI/HPM/ENG/TZ1/21

A.     \({\text{rate}} = k{{\text{[B}}{{\text{r}}_{\text{2}}}{\text{]}}^{\text{2}}}{\text{[NO]}}\)

B.     \({\text{rate}} = k{\text{[B}}{{\text{r}}_{\text{2}}}{\text{][NO}}{{\text{]}}^{\text{2}}}\)

C.     \({\text{rate}} = k{{\text{[B}}{{\text{r}}_{\text{2}}}{\text{]}}^{\text{2}}}\)

D.     \({\text{rate}} = k{{\text{[NO]}}^{\text{2}}}\)

Markscheme

C

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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