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Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water: C6 H5COOH C¢H5COO-+H+ The pKa of this reaction is 4.2. In a 0.71 M solution of benzoic acid, what percentage of the molecules are ionized? Express the percentage numerically using two significant figures.

Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water: C6 H5COOH C¢H5COO-+H+ The pKa of this reaction is 4.2. In a 0.71 M solution of benzoic acid, what percentage of the molecules are ionized? Express the percentage numerically using two significant figures.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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3) I need help with part B
Unlike strong acids and bases that ionize completely in solution, weak acids or bases partially ionize. The tendency to ionize (i.e., the ionic strength) of a weak acid or base can be quantified in several ways including Ka or K, pKa or pKb. and percent ionization.
Transcribed Image Text:Unlike strong acids and bases that ionize completely in solution, weak acids or bases partially ionize. The tendency to ionize (i.e., the ionic strength) of a weak acid or base can be quantified in several ways including Ka or K, pKa or pKb. and percent ionization.
Réview | Constants | Periodic Table Part A Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette smoke. Pyridine ionizes in water as follows: C5 H5N + H20= C,H;NH+ + OH- The pK, of pyridine is 8.75. What is the pH of a 0.140 M solution of pyridine? Express the pH numerically to two decimal places. • View Available Hint(s) pH = 9.20 Submit Previous Answers Correct Part B Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water: C6 H5COOH = C6H5COO- +H+ The pK, of this reaction is 4.2. In a 0.71 M solution of benzoic acid, what percentage of the molecules are ionized? Express the percentage numerically using two significant figures. • View Available Hint(s) percent ionized =
Transcribed Image Text:Réview | Constants | Periodic Table Part A Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette smoke. Pyridine ionizes in water as follows: C5 H5N + H20= C,H;NH+ + OH- The pK, of pyridine is 8.75. What is the pH of a 0.140 M solution of pyridine? Express the pH numerically to two decimal places. • View Available Hint(s) pH = 9.20 Submit Previous Answers Correct Part B Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water: C6 H5COOH = C6H5COO- +H+ The pK, of this reaction is 4.2. In a 0.71 M solution of benzoic acid, what percentage of the molecules are ionized? Express the percentage numerically using two significant figures. • View Available Hint(s) percent ionized =
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