At 350 K, a gas-phase reaction has a reported value of ( _ 10 K = -4.2 ). Which…
CHEMISTRY · Single correct · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
At 350 K, a gas-phase reaction has a reported value of log10K=−4.2. Which statement is most consistent with this information?
(a) At equilibrium, products greatly exceed reactants, so the reaction is product-favored.
(b) The sign of logK alone is insufficient to determine whether reactants or products are favored.
(c) At equilibrium, the concentration of reactants greatly exceeds that of products, so the reaction is reactant-favored.
(d) At equilibrium, comparable amounts of reactants and products are present, because K is only a few orders of magnitude away from 1.