Answered: Calculate the pH at 25 °C of a 0.44M…

Calculate the pH at 25 °C of a 0.44M solution of potassium butanoate (KC,H,CO,). Note that butanoic acid (HC,H,CO,) is a weak acid with a p K, of 4.82. Round your answer to 1 decimal place. pH =

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 82AP

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Weak base B has a pKb of 6.78 and weak acid HA has a pKa of 5.12. a Which is the stronger base, B or A? b Which is the stronger acid, HA or BH+? c Consider the following reaction: B(aq)+HA(aq)BH+(aq)+A(aq) Based on the information about the acid/base strengths for the species in this reaction, is this reaction favored to proceed more to the right or more to the left? Why? d An aqueous solution is made in which the concentration of weak base B is one half the concentration of its acidic salt, BHCl, where BH+ is the conjugate weak add of B. Calculate the pH of the solution. e An aqueous solution is made in which the concentration of weak acid HA twice the concentration of the sodium salt of the weak acid, NaA. Calculate the pH of the solution. f Assume the conjugate pairs B/BH+ and HA/A are capable of being used as color-based end point indicators in acidbase titrations, where B is the base form indicator and BH is the acid form indicator, and HA is the acid form indicator and A is the base form indicator. Select the indicator pair that would be best to use in each of the following titrations: (1) Titration of a strong acid with a strong base. (i) B/BH+ (ii) HA/A (2) Titration of a weak base with a strong acid. (i) B/BH+ (ii) HA/A
Calculate the pH at 25 °C of a 0.46 M solution of potassium butanoate (KC,H,CO,). Note that butanoic acid (HC,H,CO,) is a weak acid with a pK, of 4.82. Round your answer to 1 decimal place.
Calculate the pH at 25 °C of a 0.27M solution of sodium benzoate (NaC,H,CO,). Note that benzoic acid (HC,H,CO,) is a weak acid with a p K, of 4.20. Round your answer to 1 decimal place. pH
Calculate the pH at 25 °C of a 0.33 M solution of potassium butanoate (KC,H,Co,). Note that butanoic acid (HC,H,CO,) is a weak acid with apK, of 4.82. Round your answer to 1 decimal place. pH =
Calculate the pH at 25 °C of a 0.72M solution of potassium butanoate (KC,H,Co,). Note that butanoic acid (HC, H,CO,) is a weak acid with a p K, of 4.82. Round your answer to 1 decimal place. PH = 回山因

Calculate the pH at 25 °C of a 0.87M solution of potassium butanoate (KC,H,CO,). Note that butanoic acid (HC;H,CO,) is a weak acid with a p K, of 4.82. Round your answer to 1 decimal place. pH = 0 ? alo 18 Ar
Calculate the pH at 25 °C of a 0.67M solution of potassium acetate (KCH, CO₂). Note that acetic acid (HCH₂CO₂) is a weak acid with a pK, of 4.76. Round your answer to 1 decimal place. pH = 0 X ? Ś
Calculate the pH at 25 °C of a 0.83M solution of potassium butanoate (KC, H,CO₂). Note that butanoic acid (HC₂H,CO₂) is a weak acid with a pk of 4.82. Round your answer to 1 decimal place. pH =
Calculate the pH at 25 °C of a 0.94 M solution of sodium propionate (NaC,H;CO,). Note that propionic acid (HC,H,CO,) is a weak acid with a p K, of 4.89 Round your answer to 1 decimal place.
Calculate the pH at 25 °C of a 0.30M solution of potassium acetate (KCH,CO,). Note that acetic acid (HCH,CO,) is a weak acid with a p K, of 4.76. Round your answer to 1 decimal place. PH =||
Calculate the pH at 25 °C of a 0.30M solution of sodium propionate (NaC,H,CO,). Note that propionic acid (HC,H,CO,) is a weak acid with a p K, of 4.89. Round your answer to 1 decimal place. pH =
Calculate the pH at 25 °C of a 0.60M solution of sodium benzoate (NaCH,CO2). Note that benzoic acid (HC6H,CO2) is a weak acid with a PK of 4.20. a Round your answer to 1 decimal place. pH = 0

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