Which describes a solution that contains a system at equilibrium? explain your answer. a. one in which the color is not changing due to the rate that the product forms is equal to the rate the reactant reforms.
b. one in which the color of the solution is changing slowly due to the formation of the product
c. one in which the color of the solution is changing slowly due to the formation of the reactants
d. one in which the color is not changing due to all reactions have stopped