4. A solution of hydrofluoric acid (0.27 M, 10.00 mL) was titrated with 15.0 mL of 0.13 M sodium hydroxide (Ka of hydrofluoric acid = 7.20 x 104). What is the resulting pH of this solution? а. 3.33 b. 3.56 c. 4.57 d. 10.44 11.27 е.

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4. A solution of hydrofluoric acid (0.27 M, 10.00 mL) was titrated with 15.0 mL of 0.13 M sodium hydroxide
(Ka of hydrofluoric acid = 7.20 x 104). What is the resulting pH of this solution?
а. 3.33
b. 3.56
c. 4.57
d. 10.44
11.27
е.
5. What is the pH of a saturated cobalt(II) hydroxide solution in water if the Ksp is 1.10 x 10-16 for Co(OH)2 (aq)?
-
8.78
b.
1.96
12.04
d. 12.22
e. 9.83
а.
с.
1 1.1.0
Transcribed Image Text:4. A solution of hydrofluoric acid (0.27 M, 10.00 mL) was titrated with 15.0 mL of 0.13 M sodium hydroxide (Ka of hydrofluoric acid = 7.20 x 104). What is the resulting pH of this solution? а. 3.33 b. 3.56 c. 4.57 d. 10.44 11.27 е. 5. What is the pH of a saturated cobalt(II) hydroxide solution in water if the Ksp is 1.10 x 10-16 for Co(OH)2 (aq)? - 8.78 b. 1.96 12.04 d. 12.22 e. 9.83 а. с. 1 1.1.0
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