User interface language: English | Español

Date November 2010 Marks available 1 Reference code 10N.1.sl.TZ0.20
Level SL Paper 1 Time zone TZ0
Command term Question number 20 Adapted from N/A

Question

The formation of nitric acid, \({\text{HN}}{{\text{O}}_{\text{3}}}{\text{(aq)}}\), from nitrogen dioxide, \({\text{N}}{{\text{O}}_{\text{2}}}{\text{(g)}}\), is exothermic and is a reversible reaction.

\[{\text{4N}}{{\text{O}}_{\text{2}}}{\text{(g)}} + {{\text{O}}_{\text{2}}}{\text{(g)}} + {\text{2}}{{\text{H}}_{\text{2}}}{\text{O(l)}} \rightleftharpoons {\text{4HN}}{{\text{O}}_{\text{3}}}{\text{(aq)}}\]

What is the effect of a catalyst on this reaction?

A.     It increases the yield of nitric acid.

B.     It increases the rate of the forward reaction only.

C.     It increases the equilibrium constant.

D.     It has no effect on the equilibrium position.

Markscheme

D

Examiners report

[N/A]

Syllabus sections

Core » Topic 7: Equilibrium » 7.1 Equilibrium
Show 146 related questions

View options