O-LevelChemistryRates of Reaction5070/12 · May/June 2014 · Q191 Mark
Ammonia is made by a reversible reaction between nitrogen and hydrogen. N₂(g) + 3H₂(g) ⇌ 2NH₃(g) ΔΗ = −92 kJ/mol What is the effect of increasing the pressure in this process?
ALess heat is produced.
BMore ammonia is formed.
CMore nitrogen is present at equilibrium.
DThe reaction slows down.
✓ Correct answer
B: More ammonia is formed.
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