GCSE Chemistry Edexcel 1CH0

4: (b) Reversible reactions and equilibria

#4.13

Recall that chemical reactions are reversible, the use of the symbol ⇌ in equations and that the direction of some reversible reactions can be altered by changing the reaction conditions

#4.14

Explain what is meant by dynamic equilibrium

#4.15

Describe the formation of ammonia as a reversible reaction between nitrogen (extracted from the air) and hydrogen (obtained from natural gas) and that it can reach a dynamic equilibrium

#4.16

Recall the conditions for the Haber process as:

a) temperature 450°C b) pressure 200 atmospheres c) iron catalyst

#4.17

Predict how the position of a dynamic equilibrium is affected by changes in:

a) temperature b) pressure c) concentration

4
(a) Obtaining and using metals
5
(a) Transition metals, alloys and corrosion