The formation of NH3 is a reversible and exothermic process, what will happen on cooling?
Correct answer: D. More product (NH3) will be formed
- A. More reactant will form
- B. More N2 will be formed
- C. More H2 will be formed
- D. More product (NH3) will be formed
Explanation
According to Le Chatelier's principle, when a system at equilibrium is subjected to a change in temperature, pressure, or concentration of reactants or products, the equilibrium shifts in a direction that tends to counteract the imposed change.In the given scenario, the formation of NH3 is exothermic, meaning that heat is released when NH3 is formed. If the reaction mixture is cooled, the equilibrium will shift in the direction that releases more heat. Thus, the equilibrium will shift towards the forward direction (towards the formation of (NH3) to counteract the decrease in temperature. Therefore, more NH3 will be formed.Hence, the correct option is D) More product (NH3) will be formed.
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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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