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Date May 2011 Marks available 1 Reference code 11M.1.hl.TZ2.21
Level HL Paper 1 Time zone TZ2
Command term Deduce Question number 21 Adapted from N/A

Question

The rate information below was obtained for the following reaction at a constant temperature.

\[2{\text{N}}{{\text{O}}_2}({\text{g)}} + {{\text{F}}_2}({\text{g)}} \to {\text{2N}}{{\text{O}}_2}{\text{F(g)}}\]

M11/4/CHEMI/HPM/ENG/TZ2/21

What are the orders of the reaction with respect to \({\text{N}}{{\text{O}}_{\text{2}}}\) and \({{\text{F}}_{\text{2}}}\)?

A.     \({\text{N}}{{\text{O}}_{\text{2}}}\) is first order and \({{\text{F}}_{\text{2}}}\) is second order

B.     \({\text{N}}{{\text{O}}_{\text{2}}}\) is second order and \({{\text{F}}_{\text{2}}}\) is first order

C.     \({\text{N}}{{\text{O}}_{\text{2}}}\) is first order and \({{\text{F}}_{\text{2}}}\) is first order

D.     \({\text{N}}{{\text{O}}_{\text{2}}}\) is second order and \({{\text{F}}_{\text{2}}}\) is second order

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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