The decomposition has at a particular temperature

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

Problem

The decomposition 2 N2O5(g)→4 NO2(g)+O2(g)2\,\mathrm{N_2O_5}(g) \rightarrow 4\,\mathrm{NO_2}(g)+\mathrm{O_2}(g) has ΔG∘=−200 kJ\Delta G^\circ = -200\,\text{kJ} at a particular temperature, indicating that products are favored. If every stoichiometric coefficient in the equation is multiplied by 2, which statement correctly describes the new reaction? (a) It remains product-favored, and the new equilibrium constant equals half of the original value. (b) It remains product-favored, and the new equilibrium constant equals the square of the original value. (c) It remains product-favored, and the new equilibrium constant is unchanged from the original value. (d) It becomes reactant-favored, and the new equilibrium constant equals the square of the original value.

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