a) Find the pH of a 500 mL aqueous buffer solution prepared with 3.81 g of H3BO3 and 4.55 gof NaH,BOз.

Chemistry: An Atoms First Approach
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Author:Steven S. Zumdahl, Susan A. Zumdahl
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Chapter14: Acid- Base Equilibria
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Problem 97AE: A student intends to titrate a solution of a weak monoprotic acid with a sodium hydroxide solution...
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a) Find the pH of a 500 mL aqueous buffer solution prepared with 3.81 g of H3BO3 and 4.55
g of NaH2BO3.
b) A weak acid (HA) solution has a 5.6 x 10-5 M of H3O*. If the K for the weak acid is 3.1 x
108, calculate the initial molarity of the weak acid.
c) At 25°C, what is the hydronium ion concentration in 0.200 M sodium chloroacetate,
CICH;COONA?
Transcribed Image Text:a) Find the pH of a 500 mL aqueous buffer solution prepared with 3.81 g of H3BO3 and 4.55 g of NaH2BO3. b) A weak acid (HA) solution has a 5.6 x 10-5 M of H3O*. If the K for the weak acid is 3.1 x 108, calculate the initial molarity of the weak acid. c) At 25°C, what is the hydronium ion concentration in 0.200 M sodium chloroacetate, CICH;COONA?
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