For the reaction ,

CHEMISTRY · Subjective · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)

Problem

For the reaction 2 SO2(g)+O2(g)⇌2 SO3(g)2\,\mathrm{SO_2(g)} + \mathrm{O_2(g)} \rightleftharpoons 2\,\mathrm{SO_3(g)}, ΔH=−197 kJ\Delta H = -197\,\text{kJ}, state (i) whether the equilibrium constant KK increases, decreases, or stays the same and (ii) whether the equilibrium shifts toward reactants or products when the temperature is increased. Provide both answers concisely.

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