1. Ch Clicker Review

2. Which of the following indicator ranges would help to determine whether a substance is an acid or a base?
A. 2-7
B. 5-7
C. 5-9
D. 8-12

3. If a solution turns blue litmus paper red, which of the following is true?
A. The solution tested has more OH- ions than H3O+ ions
B. The solution tested has less OH- ions than H3O+ ions
C. The solution tested has the same amount of OH- ions as H3O+ ions
D. The solution tested has no OH- ions or H3O+ ions

4. What is true concerning pH?
A. The pH of a strong base is 0 and a strong acid is 14
B. A base is inert (non-reactive)
C. Acids release OH- ions in solution
D. If a solutions has a sour taste, it has an acidic pH

5. Which of the following would have the Lowest pH?
A. KOH
B. NH3
C. NaOH
D. HBr

6. In the following reaction, Oxygen is being
A. reduced
B. oxidized
C. neither oxidized or reduced
D. oxidized and then reduced

7. What is not true concerning pH?
A. Indicators are used to show acidity or alkalinity (base) of a solution by changing color.
B. The pH of a solution corresponds to the concentration of hydrogen(hydronium) ions.
C. Bases release OH- ions in solution.
D. If a solution is slippery, it has a low pH

8. What is true concerning pH?
A. Bases can have pH values from 7-12
B. Acids can have pH values from 0-6.
C. Neutral solutions have pH values >8.
D. Bases can have pH values from 3-9.

9. If a solution turns red litmus paper blue, which of the following is true?
A. The solution tested has more OH- ions than H3O+ ions
B. The solution tested has less OH- ions than H3O+ ions
C. The solution tested has the same amount of OH- ions as H3O+ ions
D. The solution tested has no OH- ions or H3O+ ions

10. What does the half reaction represent?
A. reduction
B. oxidation
C. neutralization
D. synthesis

11. Which of the following is a Lewis base?
𝑁𝐻3(𝑎𝑞)+𝐻𝐶𝑙(𝑎𝑞) →𝑁𝐻4𝐶𝑙(𝑎𝑞)
A. 𝐻𝐶𝑙
B. 𝑁𝐻3
C. 𝑁𝐻4𝐶𝑙
D. 𝑁𝐻4+

12. Which of the following would have the highest pH?
A. HCl
B. HBr
C. NaOH
D. C6H12O6

13. NaOH is an Arrhenius base because
𝑁𝑎𝑂𝐻(𝑎𝑞)+𝐻𝐶𝑙(𝑎𝑞) →𝑁𝑎𝐶𝑙(𝑎𝑞)+ 𝐻 2 𝑂(𝑙)
A. It produces Na+ ions in aqueous solutions
B. it produces OH- ions in aqueous solution
C. it produces H+ ions in aqueous solution
D. it oxidizes OH- ions in aqueous solution

14. In the following reaction, Br is being
A. reduced
B. oxidized
C. neither oxidized or reduced
D. oxidized and then reduced

15. If equal quantities of 1M NaOH and 1M hcl were mixed, what would the resulting pH be?

16. Oxidation reduction (redox) reactions involve?
A. the gain of electrons only
B. the loss of electrons only
C. no loss or gain of electrons
D. both the gain and loss of electrons

17. In the following reaction, Mn is being
A. reduced
B. oxidized
C. neither oxidized or reduced
D. oxidized and then reduced

18. How is the following reaction classified?
𝑁𝑎𝑂𝐻(𝑎𝑞)+𝐻𝐶𝑙(𝑎𝑞) →𝑁𝑎𝐶𝑙(𝑎𝑞)+ 𝐻 2 𝑂(𝑙)
A. single replacement
B. combustion
C. synthesis
D. neutralization

19. Which substance is being reduced in the reaction below?
2𝐾(𝑠)+𝐼2(𝑎𝑞) →2𝐾𝐼(𝑠)
A. K
B. I2
C. KI
D. I-

20. Which of the following is a Lewis acid?
𝑁𝐻3(𝑎𝑞)+𝐻𝐶𝑙(𝑎𝑞) →𝑁𝐻4𝐶𝑙(𝑎𝑞)
A. 𝐻𝐶𝑙
B. 𝑁𝐻3
C. 𝑁𝐻4𝐶𝑙
D. 𝑁𝐻4+

21. _______ electrolytes are ______ conductors of electricity
A. weaker, better
B. neutral, better
C. molecular, better
D. stronger, better

22. 𝑁𝐻3 is a brØnsted-lowry Base because
𝑁𝐻3(𝑎𝑞)+𝐻𝐶𝑙(𝑎𝑞) →𝑁𝐻4𝐶𝑙(𝑎𝑞)
A. It donates a proton to HCl
B. It accepts a proton from HCl
C. it produces H+ ions in aqueous solution
D. it oxidizes H+ ions in aqueous solution

23. Which is the base in the following reaction?
Ca(𝑂𝐻)2(𝑎𝑞)+𝐻2𝐶𝑂3(𝑎𝑞) →𝐶𝑎𝐶𝑙2(𝑎𝑞)+ 2𝐻 2 𝑂(𝑙)
A. H2CO3
B. Ca(OH)2
C. CaCl2
D. H2O

24. What does the half reaction represent?
A. reduction
B. oxidation
C. neutralization
D. synthesis

25. HCl is an Arrhenius acid because
𝑁𝑎𝑂𝐻(𝑎𝑞)+𝐻𝐶𝑙(𝑎𝑞) →𝑁𝑎𝐶𝑙(𝑎𝑞)+ 𝐻 2 𝑂(𝑙)
A. It produces Cl- ions in aqueous solutions
B. it produces OH- ions in aqueous solution
C. it produces H+ ions in aqueous solution
D. it oxidizes H+ ions in aqueous solution

26. HCl is a brØnsted-lowry acid because
𝑁𝐻3(𝑎𝑞)+𝐻𝐶𝑙(𝑎𝑞) →𝑁𝐻4𝐶𝑙(𝑎𝑞)
A. It donates a proton to NH3
B. It accepts a proton from NH3
C. it produces H+ ions in aqueous solution
D. it oxidizes H+ ions in aqueous solution

27. The oxidation number of Fe in the following compound is
𝐹𝑒3(𝑃𝑂4)2(𝑎𝑞)
A. 1+
B. 2+
C. 3+
D. 4+

28. Metals react with acids to form _____ and ____
A. Salt and hydrogen gas
B. water and salt
C. oxygen and salt
D. salt and helium gas

29. Electrolytes ____ in water and can ____ electricity.
A. synthesize, transmit
B. become molecules, conduct
C. dissociate, conduct
D. lower their kinetic energy, block

30. Get your whiteboard!

31. If an acid has a pH of 5.6, What would its hydrogen (hydronium) ion concentration be?
10- pH = [H+] = = 2.5 X 10-6M

32. If an base has a pOH of 1.6, What would its hydroxide ion concentration be?
10- pOH = [OH-] = = M

33. If a solution has a pH of 5.4, What is its pOH?
pH + pOH = 14
pOH = 14 – pH = 14 – 5.4 = 8.6

34. If a solution has a pOH of 2.1, What is its pH?
pH + pOH = 14
pH = 14 – pOH = 14 – 2.1 = 11.9

35. If a solution of HI has a concentration of 0.025, what is the pH?
pH = -log[H+] = -log[0.025] = 1.6

36. If 120mL of a solution of hydroiodic acid (HI) has been neutralized by 45.9 mL of 0.34 M NaOH solution to its endpoint in a titration, what is the concentration of the HI?
MbaseVbase = MacidVacid
0.34M X 45.9mL = Macid(120mL)
Macid= 0.34M X 45.9mL =
120mL
0.13 M