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Chemical Equilibria Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. What will happen if a chemical reaction system is stressed by an increase in the concentration of reactants?

Question 2 2. Why is a teeter-totter a good illustration of an equilibrium adjustment between two gas volumes?

Question 3 3. What does Boyle's law state about the role of pressure as a stressor on a system?

Question 4 4. What will be the result if heat is added to an endothermic reaction?

Question 5 5. Which of the following statements best describes Le Chatelier's Principle?

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Question 6 6. Reaction equilibrium is a dynamic process because, at equilibrium, _____.

Question 7 7. Calculate the equilibrium constant for the reaction 2A (aq) + B (aq) --> 3C (aq) + D (s), if the equilibrium concentrations are 1.25 M A, 1.50 M B, 1.0 M C, and 1.5 M D.

Question 8 8. _____ are not included in the equilibrium constant expression because their concentrations do not change.

Question 9 9. The equilibrium constant is a ratio of _____.

Question 10 10. In the equilibrium constant expression, product and reactant concentrations are raised to an exponent based on _____.

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Question 11 11. Why is the Haber process useful for human society?

Question 12 12. What is a chemical reaction?

Question 13 13. Why is it important that oxygen binding with hemoglobin is a reversible process?

Question 14 14. If a reversible process continually goes in both directions, when (if ever) does the process stop?

Question 15 15. What is a reversible chemical reaction?

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Question 16 16. What is a coefficient?

Question 17 17.

Choose the correctly balanced equation for the following reaction:

Potassium + water → potassium hydroxide + hydrogen gas

Question 18 18.

Choose the correctly balanced equation for the following reaction:

Sodium + water → sodium hydroxide + hydrogen gas

Question 19 19. Which of the following equations is balanced?

Question 20 20. Conservation of matter means that:

Chemical Equilibria Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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