(a) Sodium acetate, CH3COONA was hydrolysed in water, H2O. Show the reaction equations involved. What is the effect of the salt on the pH of this solution? (b) (i) Define buffer solution. (ii) 2.50 g of sodium acetate, CH3COONa was dissolved in 150.0 mL of water, H2O. A solution of 0.025 M ethanoic acid, CH3COOH was added into the above salt solution. Calculate the pH of the mixed solution. [pKa of CH3COOH = 4.75, Molar mass of CH3COONA = 82.0 g mol-1] %3D
(a) Sodium acetate, CH3COONA was hydrolysed in water, H2O. Show the reaction equations involved. What is the effect of the salt on the pH of this solution? (b) (i) Define buffer solution. (ii) 2.50 g of sodium acetate, CH3COONa was dissolved in 150.0 mL of water, H2O. A solution of 0.025 M ethanoic acid, CH3COOH was added into the above salt solution. Calculate the pH of the mixed solution. [pKa of CH3COOH = 4.75, Molar mass of CH3COONA = 82.0 g mol-1] %3D
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 49P
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Question
![(a) Sodium acetate, CH3COONA was hydrolysed in water, H2O. Show the
reaction equations involved. What is the effect of the salt on the pH of this
solution?
(b)
(i) Define buffer solution.
(ii) 2.50 g of sodium acetate, CH3COONA was dissolved in 150.0 mL of
water, H2O. A solution of 0.025 M ethanoic acid, CH3COOH was added
into the above salt solution. Calculate the pH of the mixed solution.
[pKa of CH3COOH = 4.75, Molar mass of CH3COONA = 82.0 g mol-1]
(c) Explain how the above buffer solution maintain its pH when a small amount
of sodium hydroxide, NaOH is added.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F292bfea7-bcca-4e09-ad7c-ab123f602396%2F81a67381-0140-492a-b28c-b7c31a29bfd7%2F4t4cab_processed.jpeg&w=3840&q=75)
Transcribed Image Text:(a) Sodium acetate, CH3COONA was hydrolysed in water, H2O. Show the
reaction equations involved. What is the effect of the salt on the pH of this
solution?
(b)
(i) Define buffer solution.
(ii) 2.50 g of sodium acetate, CH3COONA was dissolved in 150.0 mL of
water, H2O. A solution of 0.025 M ethanoic acid, CH3COOH was added
into the above salt solution. Calculate the pH of the mixed solution.
[pKa of CH3COOH = 4.75, Molar mass of CH3COONA = 82.0 g mol-1]
(c) Explain how the above buffer solution maintain its pH when a small amount
of sodium hydroxide, NaOH is added.
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