Practice Dynamic Equilibrium And The Equilibrium Constant (7.1)

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6 sample questions

Question 1.
What do we mean by dynamic equilibrium?
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Remember the traffic analogy.
Question 2.
What does Kc represent in a chemical reaction?
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Think about how it measures favorability of products versus reactants.
3Question 3.
What happens to the concentrations of reactants and products at dynamic equilibrium?
- They stop changing
- They fluctuate wildly
- They remain constant over time
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Think about the balance of rates.
4Question 4.
Is Kc dependent on the initial concentrations of reactants and products?
- True
- False
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Remember what affects the equilibrium constant.
Question 5.
Consider a reaction where A ⇌ 2B with a Kc = 50 at a certain temperature. If initial [A] = 0.1 M and [B] = 0 M, calculate the equilibrium concentrations.
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An algebraic rearrangement may be needed.
Question 6.
Describe how Le Châtelier’s principle would apply if we increased the concentration of product C in the reaction A + B ⇌ C.
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Think about what happens when reactants or products are added.

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