Answer to Question #286977 in General Chemistry for Twilight

Question

A solution is prepared with [V

3+

] = [Cr

2+

] = 0.0100 M. and [V

2+

] = [Cr

3+

] = 0.125 M The

following reaction occurs.

𝑉

3+(𝑎𝑞) + 𝐶𝑟

2+(𝑎𝑞) ⇆ 𝑉

2+(𝑎𝑞) + 𝐶𝑟

3+(𝑎𝑞) 𝐾𝑐 = 7.2𝑥102

What are the concentrations of the participating species when equilibrium is reached?

Answer 1

When a system has reached equilibrium, no further changes in the reactant and product concentrations occur; the reactions continue to occur, but at equivalent rates.