14.1 Review
Name__________________________
The Concept of Equilibrium
Period_________Date_____________
Part I: Matching
_____ 1. the formation of products from reactants
A. reversible reaction
_____ 2. a chemical reaction in which the products can generate
The original reactants
B. chemical equilibrium
_____ 3. the speed at which a reaction occurs
C. reverse reaction
_____ 4. the regeneration of reactants from products
D. reaction rate
_____ 5. the state in which the concentrations of reactants and
products remain constant with time
E. forward reaction
Part II: Short Answer
6. Explain how reaction rate and equilibrium are related. Give an example illustrating this relationship.
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7. In performing most calculations with chemical reactions, it is assumed that the reactants are entirely
consumed. Is this assumption always appropriate? Explain.
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8. Can all reversible reactions be observed in the laboratory? _______Why or why not? ______________
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9. Write the forward reaction and the reverse reactions for the following:
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2SO2 + O2 ↔ 2SO3
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10. List four factors that control the rate of a reaction:
1. _________________________________________
2. _________________________________________
3. _________________________________________
4. _________________________________________
11. The higher the concentration of reactants, the ( slower / faster ) the rate of the reaction.
The lower the concentration of reactants, the ( slower / faster ) the rate of the reaction.
12. When placed in a sealed container, N2 and H2 react according to the following equation: N2 + 3H2 ↔ 2NH3
Over time, the rate of the forward reaction ( increases / decreases ) and the
rate of the reverse reaction ( increases / decreases .) During the course of the reaction the
concentration of the reactant ( increases / decreases ), while the
concentration of the product ( increases / decreases .)
13. Why will any chemical reaction reach equilibrium in a closed container? _______________________
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14. Does a reaction stop once it has reached equilibrium? ________ Explain: ______________________
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