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PRACTICE QUIZ AQUEOUS EQUILIBRIA (20 points)

PRACTICE QUIZ AQUEOUS EQUILIBRIA (20 points). 1. (2 points) Which of the following will make a buffer solution with a pH above 7 ? a. 1 M NaOH and 1 M NaCl b. 1 M HC 2 H 3 O 2 and 1 M NaC 2 H 3 O 2 c. 1 M HCl and 1 M NaCl d. 1 M NH 4 Cl and 1 M NH 3

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PRACTICE QUIZ AQUEOUS EQUILIBRIA (20 points)

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  1. PRACTICE QUIZ AQUEOUS EQUILIBRIA(20 points)

  2. 1. (2 points) Which of the following will make a buffer solution with a pH above 7 ? • a. 1 M NaOH and 1 M NaCl • b. 1 M HC2H3O2 and 1 M NaC2H3O2 • c. 1 M HCl and 1 M NaCl • d. 1 M NH4Cl and 1 M NH3 • 2. (10 points) Calculate the pH at the equivalence point for the titration of 75.0 mL of 0.200 M HCN with 0.300 M KOH? • (Ka = 4.0 x 10-10)

  3. 3. (8 points) What is the pH of a buffer solution containing 0.800 M HF and 0.500 M NaF? (Ka = 4.0 x 10-4)

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