GCSE Chemistry Specification

Edexcel 1CH0

Section 5: (c) Dynamic equilibria

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#5.19C

Describe the Haber process as a reversible reaction between nitrogen and hydrogen to form ammonia

#5.20C

Predict how the rate of attainment of equilibrium is affected by:

a) changes in temperature
b) changes in pressure
c) changes in concentration
d) use of a catalyst

#5.21C

Explain how, in industrial reactions, including the Haber process, conditions used are related to:

a) the availability and cost of raw materials and energy supplies
b) the control of temperature, pressure and catalyst used produce an acceptable yield in an acceptable time

#5.22C

Recall that fertilisers may contain nitrogen, phosphorus and potassium compounds to promote plant growth

#5.23C

Describe how ammonia reacts with nitric acid to produce a salt that is used as a fertiliser

#5.24C

Describe and compare:

a) the laboratory preparation of ammonium sulfate from ammonia solution and dilute sulfuric acid on a small scale
b) the industrial production of ammonium sulfate, used as a fertiliser, in which several stages are required to produce ammonia and sulfuric acid from their raw materials and the production is carried out on a much larger scale (details of the industrial production of sulfuric acid are not required)