13
QuizMultiple Choice

Chemical Bonding and Reactions — Test

Question 13 • Chemistry

According to Le Chatelier’s principle, what happens when the concentration of reactants is doubled in a chemical reaction that was in equilibrium?

Answer
A
The equilibrium is lost because the concentrations have been disturbed.
B
The equilibrium is unaffected by the increase in concentration.
C
The equilibrium shifts to the left to favor the formation of reactants.
D
The equilibrium shifts to the right to favor the formation of products.

Explanation

Doubling the reactant concentration disturbs the equilibrium. By Le Chatelier’s principle, the reaction shifts in the direction that uses up some of the added reactants, which is toward the products. Therefore, the equilibrium shifts to the right to favor product formation.

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