alleryFor the reaction N2 + 3H2 ⇌ 2NH3, increasing pressure favours:
AForward (fewer moles on RHS)
BRandom direction
CNo effect
DReverse
Answer & Solution
Correct answer: A. Forward (fewer moles on RHS)
Reactants have 4 moles of gas (1 N2 + 3 H2), products have 2 moles (2 NH3).
Increasing pressure shifts equilibrium toward fewer moles, hence toward products.
This is the basis of Haber's process.
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