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chemistry igcse acapprinted 137 · PDF 137
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printed 137 · PDF 137
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137
A
400
300
vanadium(V) oxide
B
450
200
iron
C
200
300
vanadium(V) oxide
D
300
200
iron
The answer is B, because a temperature of 450 degrees centigrade is used in the Haber process to create ammonia,
as all the other answers are incorrect due to the incorrect temperatures given
10. Nitrogen and hydrogen are the raw ingredients used in the production of ammonia, NH3 Which row
correctly describes the source of these reactants and the catalyst used?
nitrogen
hydrogen
catalyst
A
air
methane
Vanadium pentoxide
B
methane
water
iron
C
methane
water
Vanadium pentoxide
D
air
methane
iron
The answer is D, because nitrogen is extracted from air, hydrogen from methane and the catalyst used for the
Haber process is iron. The answer cannot be A or C because the catalyst used is not vanadium pentoxide, and the
answer cannot be B because nitrogen cannot be extracted from methane.
STRUCTURED QUESTIONS:
Bonding:
Q1. 0620_s23_qp_41