CHEMISTRY · Single correct · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
The reaction N2(g)+3H2(g)⇌2NH3(g) is exothermic. If an ammonia plant raises its reactor temperature from 450∘C to 500∘C while maintaining the pressure at 200atm, which of the following outcomes is most likely?
(a) The equilibrium yield of NH3 decreases, but the reaction rate increases.
(b) Both the equilibrium yield and reaction rate of NH3 increase.
(c) The equilibrium yield of NH3 increases, but the reaction rate decreases.
(d) Both the equilibrium yield and reaction rate of NH3 decrease.