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b) A 25 mL of 0.1 M sodium hydroxide, NaOH is reacted with 30 mL of 0.2 M ethanoic acid, CH,COOH to produce sodium ethanoate, CH3COONA salt and water as follows: NaOH (aq) + CH,COOH (aq) CH,COONA (aq) + H2O () Given the Ka of CH3COOH is 1.8 x 10%. i) Calculate the number of mol of NaOH, CH,COOH and CH,COONA present in the solution after the reaction is completed. ii) Calculate the pH of resultant solution. ii) Is the pH of the above solution change drastically if 0.005 mol of HCI is added into it? Explain.

b) A 25 mL of 0.1 M sodium hydroxide, NaOH is reacted with 30 mL of 0.2 M ethanoic acid, CH,COOH to produce sodium ethanoate, CH3COONA salt and water as follows: NaOH (aq) + CH,COOH (aq) CH,COONA (aq) + H2O () Given the Ka of CH3COOH is 1.8 x 10%. i) Calculate the number of mol of NaOH, CH,COOH and CH,COONA present in the solution after the reaction is completed. ii) Calculate the pH of resultant solution. ii) Is the pH of the above solution change drastically if 0.005 mol of HCI is added into it? Explain.

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter16: Principles Of Chemical Reactivity: The Chemistry Of Acids And Bases
Section: Chapter Questions
Problem 116IL: Amino acids are an important group of compounds. At low pH, both the carboxylic acid group (CO2H)...
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b) A 25 ml. of 0.1 M sodium hydroxide, NaOH is reacted with 30 mL of 0.2 M ethanoic acid, CH,COOH to produce sodium ethanoate, CH3COONA salt and water as follows: NaOH (aq) + CH;COOH (aq) CH3COONA (aq) + H2O () Given the Ka of CH3COOH is 1.8 × 10°. i) Calculate the number of mol of NaOH, CH,COOH and CH,COONa present in the solution after the reaction is completed. ii) Calculate the pH of resultant solution. iii) Is the pH of the above solution change drastically if 0.005 mol of HCI is added into it? Explain.
Transcribed Image Text:b) A 25 ml. of 0.1 M sodium hydroxide, NaOH is reacted with 30 mL of 0.2 M ethanoic acid, CH,COOH to produce sodium ethanoate, CH3COONA salt and water as follows: NaOH (aq) + CH;COOH (aq) CH3COONA (aq) + H2O () Given the Ka of CH3COOH is 1.8 × 10°. i) Calculate the number of mol of NaOH, CH,COOH and CH,COONa present in the solution after the reaction is completed. ii) Calculate the pH of resultant solution. iii) Is the pH of the above solution change drastically if 0.005 mol of HCI is added into it? Explain.
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