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AP Chemistry/Unit 7: Equilibrium
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Le Châtelier's Principle and Concentration

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After adding a reactant to a system at equilibrium, a researcher observes a shift toward the products. The researcher concludes that adding a reactant will always increase the product yield. Which statement best identifies the flaw in this conclusion?

A

Concentration changes do not affect the position of equilibrium.

B

The shift depends on the reaction’s stoichiometry and other conditions.

C

The yield of products is determined by the reaction’s temperature.

D

Adding reactants decreases the yield of products, not increases.

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