Catalysts in industry
2 marks · NormalState two reasons why catalysts are important in industrial chemical reactions.
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Also accept: Catalysts allow lower temperatures/pressures to be used.; Catalysts speed up the reaction rate.; Catalysts reduce energy needed/cost.; Catalysts improve efficiency in industry.
Common mistakes: Catalysts are used up in the reaction.; Catalysts increase the amount of product.
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Marking points
B1 · 1 mark · States either: catalysts allow lower temperatures/pressures or catalysts reduce energy/costs.
B2 · 1 mark · States: catalysts increase the speed/rate of industrial reactions.
Worked solution
Catalysts are important in industrial reactions because they: 1. Allow reactions to take place at lower temperatures and pressures, which saves energy and costs (B1). 2. Increase the rate of reaction, so chemical processes happen faster (B2).