Answer to Question #68286 in General Chemistry for Mohammed

Question

A dimer, X, is stable when solid but a dynamic equilibrium is set up in solution.
X(aq) 2Y(aq)
A solution of X has an initial concentration of 0.50 mol dm–3. When equilibrium has been reached
[X(aq)] has fallen to 0.25moldm–3.
The changes in [X(aq)] and [Y(aq)] are plotted against time until equilibrium is reached. The value
of Kc is then calculated.
Which graph and value for Kc are correct?

question from 9701/12/O/N/10