Please help with this chemistry question

Question

Chemical equilibrium is reached when the forward and reverse reaction rates are equal. What would happen if the concentration of products of more reactants were added to a reaction that was in chemical equilibrium? How would this addition affect the equilibrium.

Answer 1

LeChatelier's Principle states that an equilibrium system will respond to any change by trying to minimize that change.

If A <-> B then adding B to the equilibrium system will make some B go to A in order to reach a new equilibrium. You can also think in terms of the reaction kinetics: at equilibrium r_f = k_f[A] = r_b[B] . When you add B, the backward reaction increases (greater than forward reaction) until [A] builds up and [B] goes down and the rates are equal again.

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