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When you reduce a reactant, the concentration of the reactant will go down, therefore the equilibrium will shift towards the left to make up the number of the reactants lost so that the concentration will go back to equilibrium.
vanessas0123 wrote:When you reduce a reactant, why does the equilibrium shift in the reverse direction?
When you reduce something in the reaction the equilibrium shifts towards it not away from it because now you are making less of that and therefore equilibrium will shift that way to try and reduce the effect on the equilibrium (Le Chatelier's principle). If you reduce a reactant there will be more products than reactants so the equilibrium will shift towards reactants to make more of them (making up for the reduction).
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