Question

Use the reaction to answer the question.

3MnO42–(aq) + 4H+(aq) ⇄ 2MnO4–(aq) + 2H2O(l) + MnO2(s)

In this reaction, MnO42–ions are green and MnO4– ions are purple.

Which substance, when added to the solution, would make the solution more purple?

(1 point)

MnO42- ions

MnO4– ions

H2O

MnO2

Answer 1

MnO4(2-) ions.

Adding MnO4(2-) (the green reactant) shifts the equilibrium to the right (Le Chatelier's principle), producing more MnO4(-) (purple).