CHEMISTRY · Subjective · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
The decomposition equilibrium N2O4(g)⇌2NO2(g) has ΔH∘=−57kJmol−1. When the temperature of an equilibrium mixture is lowered, predict (i) whether K increases or decreases and (ii) whether the equilibrium partial pressure of NO2 increases or decreases. Provide a brief explanation.