LEARNING TASK 5.2 Spot the Catalyst Choose which among the following reactions involves the use of a catalyst. Identify it and explain your answer. a) Sodium hydroxide is added to hydrochloric acid; the temperature increases. b) Starch is broken down by the enzyme amylase; the amylase can be used over and over again. c) Copper oxide is displaced by iron; copper metal is made. d) Ammonium nitrate is added to water, the temperature of the water decreases.
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