CH-631
Transition metals
Chemistry · Secondary 3 · Medium · Transition metals
Iron is used as a catalyst in the Haber process to make ammonia. After the reaction has been running for many hours, what happens to the mass of the iron catalyst?
- It stays almost the same because the iron is not used up.
- It decreases steadily because the iron reacts and is used up.
- It increases because iron atoms are formed in the reaction.
- It doubles because the catalyst is regenerated as new iron.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.