1. A buffer solution is prepared by taking 0.25 moles of acetic acid (pKa = 4.76) and 0.400 moles of barium acetate in sufficient water to make 1.400 liters of solution. Calculate the pH of this solution. a. 4.25 b. 4.45 c. 5.00 d. 5.27 e. 5.35 2. You have 500.0 mL of a buffer solution containing 0.30M acetic acid and 0.20M sodium acetate. What will be the pH of this solution after the addition of 20.0mL of 1.00M HCl solution? (Ka = 1.8 x 10^ -5). a. 4.74 b. 5.07 c. 4.00 d. 3.02 e. 4.42 3. 40.0mL of 0.10M HCl was added to 50.0 mL of 0.10M NaOH and the mixture was stirred, then tested with a pH meter. What is its pH at 25.0 C? a. 1.96 b. 2.00 c. 7.00 d. 11.90 e. 12.05
1. A buffer solution is prepared by taking 0.25 moles of acetic acid (pKa = 4.76) and 0.400 moles of barium acetate in sufficient water to make 1.400 liters of solution. Calculate the pH of this solution. a. 4.25 b. 4.45 c. 5.00 d. 5.27 e. 5.35 2. You have 500.0 mL of a buffer solution containing 0.30M acetic acid and 0.20M sodium acetate. What will be the pH of this solution after the addition of 20.0mL of 1.00M HCl solution? (Ka = 1.8 x 10^ -5). a. 4.74 b. 5.07 c. 4.00 d. 3.02 e. 4.42 3. 40.0mL of 0.10M HCl was added to 50.0 mL of 0.10M NaOH and the mixture was stirred, then tested with a pH meter. What is its pH at 25.0 C? a. 1.96 b. 2.00 c. 7.00 d. 11.90 e. 12.05
Chapter15: Acid-base Equilibria
Section: Chapter Questions
Problem 8ALQ: You have a solution of the weak acid HA and add some of the salt NaA to it. What are the major...
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1. A buffer solution is prepared by taking 0.25 moles of acetic acid (pKa = 4.76) and 0.400 moles of barium acetate in sufficient water to make 1.400 liters of solution. Calculate the pH of this solution.
a. 4.25
b. 4.45
c. 5.00
d. 5.27
e. 5.35
2. You have 500.0 mL of a buffer solution containing 0.30M acetic acid and 0.20M sodium acetate. What will be the pH of this solution after the addition of 20.0mL of 1.00M HCl solution? (Ka = 1.8 x 10^ -5).
a. 4.74
b. 5.07
c. 4.00
d. 3.02
e. 4.42
3. 40.0mL of 0.10M HCl was added to 50.0 mL of 0.10M NaOH and the mixture was stirred, then tested with a pH meter. What is its pH at 25.0 C?
a. 1.96
b. 2.00
c. 7.00
d. 11.90
e. 12.05
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