In ammonia synthesis (N2 + 3H2 = 2NH3), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at________________?
Correct answer: D. High pressure
- A. Low pressure
- B. Atmospheric pressure; as the pressure has no effect on conversion
- C. Very high temperature
- D. High pressure
Explanation
The reaction changes four moles of reactant gas into two moles of product gas. Increasing pressure therefore shifts equilibrium toward ammonia, according to Le Chatelier’s principle, giving higher equilibrium conversion.
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