Which statement best describes how altering the concentration of a reactant or…
CHEMISTRY · Single correct · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
Which statement best describes how altering the concentration of a reactant or product affects the equilibrium constant K for a reaction held at constant temperature?
(a) Adding a reactant increases the value of K.
(b) Doubling the concentration of every species doubles the value of K.
(c) The value of K remains unchanged by any concentration change.
(d) The equilibrium constant changes momentarily, then returns to its original value once equilibrium is re-established.