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how to write an explanation for the difference between measured and pH of 7.0？

how to write an explanation for the difference between measured and pH of 7.0？

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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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how to write an explanation for the difference between measured and pH of 7.0？
E R T Y III. Determining the pH of various salt solutions. Video: https://www.youtube.com/watch?y=Ileoe4LwiQA During the experiment you would obtain a small amount of aqueous salts, and would measure theirol pH. You can predict whether a salt solution will be acidic, basic, or neutral following four situations: 1. A strong acid and a strong base will react to form a neutral salt solution. 2. A strong acid and a weak base yield a weakly acidic salt solution. 3. A weak acid and a strong base yield a weakly basic salt solution. tuo 4. A weak acid plus a weak base can yield either an acidic or basic solution. This is the most complex of the four types of reactions. To predict whether a particular combination will be acidic or basic, tabulated K values of the conjugates must be compared. lom Table 3. Determining the pH of various salt solutions Explanation for the difference between measured pH and 7.0 Salt Name of salt Salt type Measured (acidic/basic) pH NaCl 6.79 NaC2H3O2 H g 9.32 NaHCO3 8. 88 Na2CO3 10. 46 NH4CI 5.92 NH,C2H3O2 6.87 How to write an explanation for the difference between measured pH and 7.0? You need to provide an equation for hydrolysis of each salt. This will confirm that there is a formation of OH¯ or H3O* IV. Preparing a buffer solution. During the experiment you would prepare a buffer from weak acid, acetic acid, and a salt containing anion of this acid, anhydrous sodium acetate. As a result, this solution will contain 2.4x10 2 mol of each of sodium acetate and acetic acid. V. Observing pH Changes in water and buffer solutions upon addition of HCl and NaOH
Transcribed Image Text:E R T Y III. Determining the pH of various salt solutions. Video: https://www.youtube.com/watch?y=Ileoe4LwiQA During the experiment you would obtain a small amount of aqueous salts, and would measure theirol pH. You can predict whether a salt solution will be acidic, basic, or neutral following four situations: 1. A strong acid and a strong base will react to form a neutral salt solution. 2. A strong acid and a weak base yield a weakly acidic salt solution. 3. A weak acid and a strong base yield a weakly basic salt solution. tuo 4. A weak acid plus a weak base can yield either an acidic or basic solution. This is the most complex of the four types of reactions. To predict whether a particular combination will be acidic or basic, tabulated K values of the conjugates must be compared. lom Table 3. Determining the pH of various salt solutions Explanation for the difference between measured pH and 7.0 Salt Name of salt Salt type Measured (acidic/basic) pH NaCl 6.79 NaC2H3O2 H g 9.32 NaHCO3 8. 88 Na2CO3 10. 46 NH4CI 5.92 NH,C2H3O2 6.87 How to write an explanation for the difference between measured pH and 7.0? You need to provide an equation for hydrolysis of each salt. This will confirm that there is a formation of OH¯ or H3O* IV. Preparing a buffer solution. During the experiment you would prepare a buffer from weak acid, acetic acid, and a salt containing anion of this acid, anhydrous sodium acetate. As a result, this solution will contain 2.4x10 2 mol of each of sodium acetate and acetic acid. V. Observing pH Changes in water and buffer solutions upon addition of HCl and NaOH
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