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Holt McDougal Modern Chemistry Chapter 18: Chemical Equilibrium 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 is the Ksp of the reaction AB = A + B if the solution contains 0.2 mol/L of A ions and 0.2 mol/L of B ions?

Question 2 2. What does a buffer do?

Question 3 3. Why is a teeter-totter a good illustration of an equilibrium adjustment between two gas volumes?

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

Question 5 5. Which of the following describes a biochemical reaction?

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Question 6 6. When glycogen molecules break down to release glucose units, which biochemical reaction took place?

Question 7 7. What is the equation for the equilibrium constant of the reaction nA + mB → xC + yD?

Question 8 8. What is Ksp?

Question 9 9. When does a precipitate form?

Question 10 10. What do the brackets indicate in an equilibrium equation?

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Question 11 11. Which of the following statements best describes Le Chatelier's Principle?

Question 12 12. What is a saturated solution?

Question 13 13. What is the net effect of the common ion?

Question 14 14. In general, what do Ksp values tell us about the solubility of a compound under the designated conditions?

Question 15 15. If the Ksp for a reaction AB --> A+ + B- is 1.0 x 10^-14, what will the molar concentration of A+ be at equilibrium?

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Question 16 16. For the reaction A + B makes product C, what is the reaction quotient if the amount of A is 2, B is 3 and C is 8?

Question 17 17. What is a common ion?

Question 18 18. If you have a solution in equilibrium containing Cl- ions and you added NaCl to the solution, what is going to happen?

Question 19 19. What is the common ion effect?

Question 20 20. What does the reaction quotient determine?

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Question 21 21. What is NOT true about buffered solutions that is true about other solutions in equilibrium?

Question 22 22. What is a buffer?

Question 23 23. What will happen if a chemical reaction system is stressed by an increase in the concentration of reactants?

Question 24 24. What happens if a base is added to a buffered solution?

Question 25 25. A + B is in equilibrium with AB. If concentration of A is 2, the concentration of B is 4 and the concentration of AB is 8, what is the Keq?

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Question 26 26. Which of the following describes a Decomposition Reaction?

Question 27 27. If reactants can interact to form products, but the products can also react to form the reactants, which biochemical reaction took place?

Question 28 28. Which of the following is correctly labeled.

Question 29 29. How do you calculate the pH of a buffered solution?

Question 30 30. The correct equation for finding the equilibrium constant is:

Holt McDougal Modern Chemistry Chapter 18: Chemical Equilibrium 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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