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A-Level Edexcel Chemistry Dynamic Equilibrium

Review A-Level Edexcel Chemistry dynamic equilibrium through reversible-reaction graphs, equal rates and constant concentrations.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • define dynamic equilibrium as equal forward and backward rates with constant concentrations
  • interpret reversible-reaction graphs as concentrations or rates reach equilibrium
  • reject misconceptions that equilibrium means reactions stop or concentrations are equal

9.9—Many reactions are readily reversible and that they can reach a state of dynamic equilibrium in which: i the rate of question 1

[Maximum number: 1]

Which statement is not true for a system at dynamic equilibrium?

A

the position of equilibrium is affected by temperature, by pressure and by catalysts

B

the concentration of reactants is constant

C

the forward and backward reactions occur at equal rates

D

the equilibrium can be reached from either direction

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