Which substance would most neutralize an acidic food? A. dairy (ph 5 7) B. water (ph 6 7) C. citrus fruit (ph 2 3) D. baking soda (ph 8 9)

Transcription

1 Which substance would most neutralize an acidic food? A. dairy (ph 5 7) B. water (ph 6 7) C. citrus fruit (ph 2 3) D. baking soda (ph 8 9)

2 The table below shows the ph and reaction to litmus of four body fluids. These data indicate that gastric juice is A. very acidic. B. very basic. C. positively charged. D. negatively charged.

3 Which of the following is an observable property of many acids? A. They become slippery when reacting with water. B. They react with metals to release hydrogen gas. C. They produce salts when mixed with other acids. D. They become more acidic when mixed with a base.

4 Potassium hydroxide (KOH) is a strong base because it A. easily releases hydroxide ions. B. does not dissolve in water. C. reacts to form salt crystals in water. D. does not conduct an electric current.

5 Of four different laboratory solutions, the solution with the highest acidity has a ph of A. 11. B. 7. C. 5. D. 3.

6 The table below shows the ph values of samples of substances. Substance ph Rainwater 5.8 Drain cleaner 14.0 Distilled water 7.0 Soda water 3.0 According to the table, which of these substances is basic? A. rainwater B. drain cleaner C. distilled water D. soda water

7 A student was assigned to take water samples from a lake near his home. He measured the ph of one of the water samples to be 6.0. Which of the following best describes this sample of water? A. highly acidic B. slightly acidic C. highly basic D. slightly basic

8 The table below shows ph values of some foods. A patient has chronic indigestion due to an overproduction of stomach acid. Which foods should the patient avoid until the condition is resolved? A. vegetables B. citrus C. dairy/egg D. starches

9 Sodium hydroxide (NaOH) is a strong base. aqueous solution is given below. The dissociation of NaOH in an NaOH(aq) Na + (aq) + OH (aq) According to the Arrhenius theory, why is sodium hydroxide a base? A. NaOH is a neutralizer. B. NaOH is a proton acceptor. C. NaOH is a hydroxide ion donor. D. NaOH is an electron pair provider.

10 The equation below represents the reaction of hydrogen iodide with water. HI + H 2 O H 3 O + + I Which reactant in this equation acts as a Br nsted base? A. HI B. H 2 O C. HO +3 D. I

11 The equation below shows ammonia dissolving in water. NH 3 (aq) + H 2 O(l) NH + 4 (aq) + OH (aq) Why is water considered an acid when ammonia is dissolved in it? A. Water acts as a proton donor. B. Water acts as a proton acceptor. C. Water contains hydrogen atoms. D. Water has a 2 : 1 ratio of hydrogen to oxygen.

12 The ph of four different solutions of common materials is measured. Which of the following lists the solutions in order from most acidic to most basic? A. battery acid, lemon juice, blood, laundry detergent B. lemon juice, battery acid, blood, laundry detergent C. laundry detergent, blood, lemon juice, battery acid D. battery acid, blood, laundry detergent, lemon juice

13 The ph of milk is 6.4. Based on this information, which of the following statements best describes milk? A. It is very basic. B. It is very acidic. C. It is slightly basic. D. It is slightly acidic.

14 A biology class measured the ph of the water in four ponds. The data are recorded in the table below. ph OF POND WATER Pond ph Which pond has the most acidic water? A. Pond 1 B. Pond 2 C. Pond 3 D. Pond 4

15 You are classifying substances based on their ph during lab. Which property does the ph scale measure? A. acidity B. density C. specific heat D. melting point

16 Lemon juice has a ph of 2.3. Which word best describes lemon juice based on the ph? A. acid B. base C. neutral D. salt

17 Why is KOH considered to be an Arrhenius base? A. It produces OH + ions in solution. B. It produces H + ions in solution. C. It produces H ions in solution. D. It produces OH ions in solution.

18 What is the [H + ] of an HCl solution if the ph is measured to be 6? A M B M C M D M

19 According to the Arrhenius theory, a substance that yields hydrogen ions as the only ion in an aqueous solution is A. a salt B. a base C. an acid D. a nonelectrolyte

20 What is a conjugate acid-base pair in the reaction H 2 O + HI H 3 O + + I? A. H 2 O and HI B. H 2 O and I C. HI and I D. HI and H 3 O +

21 In the reaction HCl + H 2 O H 3 O + + Cl, a conjugate acid-base pair is A. HCl and H 3 O + B. HCl and H 2 O C. HCl and Cl D. H 2 O and Cl

22 According to the Brönsted-Lowry theory, an acid is A. a proton donor B. a proton acceptor C. an electron donor D. an electron acceptor

23 In the reaction HBr + H 2 O H 3 O + + Br, which is a conjugate acid-base pair? A. HBr and Br B. HBr and H 2 O C. H 3 O + and Br D. H 3 O + and HBr

24 According to the Arrhenius theory, a substance that is classified as an acid will always yield A. H + (aq) B. K + (aq) C. F (aq) D. I (aq)

25 If a solution has a hydronium ion concentration of M, the solution is A. basic and has a ph of 9 B. basic and has a ph of 5 C. acidic and has a ph of 9 D. acidic and has a ph of 5

26 What is the ph of an aqueous solution of C 6 H 12 O 6? A. 1 B. 7 C. 11 D. 14

27 Which ph value represents a solution with the lowest OH ion concentration? A. 1 B. 7 C. 10 D. 14

28 Which ph value indicates the most basic solution? A. 7 B. 8 C. 3 D. 11

29 Which 0.1 M solution has a ph greater than 7? A. C 6 H 12 O 6 B. CH 3 COOH C. KCl D. KOH

30 Given the following solutions: Solution A: ph of 10 Solution B: ph of 7 Solution C: ph of 5 Which list has the solutions placed in order of increasing H + concentration? A. A, B, C B. B, A, C C. C, A, B D. C, B, A

31 Problem-Attic format version c EducAide Software Licensed for use by Patrick Escott Terms of Use at Acid-Base Review 05/12/ D 21. C 2. A 22. A 3. B 23. A 4. A 24. A 5. D 25. A 6. B 26. B 7. B 27. A 8. B 28. D 9. C 29. D 10. B 30. A 11. A 12. A 13. D A 16. A 17. D 18. B 19. C 20. C