Formation of NH3 is reversible and exothermic process, what will happen on cooling?
Correct answer: D. More ammonia will be formed
- A. More reactants will form
- B. More H2 will be formed
- C. More N2 will be formed
- D. More ammonia will be formed
Explanation
The Haber process for ammonia synthesis is exothermic, meaning it releases heat. According to Le Chatelier's principle, if the temperature is decreased (cooling), the equilibrium shifts towards the exothermic direction to produce more heat. Thus, more ammonia (NH3) will be formed as a product. Options A, B, and C are incorrect because they suggest that cooling would produce more reactants, which is contrary to the principles governing exothermic reactions.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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