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What is the pH of a buffer solution, prepared by mixing of 20 mL 0.1 M NaH₂PO4 solution and 100 mL 0.05 M Na₂HPO4 solution. Ka (H₂PO4) = 6.2.10-8 mol/L. (You should to round the answer to the nearest tenth (according to the rules). Example 3.44 =3.4; 3.46=3.5) O a. pH=8.7 O b. pH=6.8 O c. pH=6.5 O d. pH=5.3

What is the pH of a buffer solution, prepared by mixing of 20 mL 0.1 M NaH₂PO4 solution and 100 mL 0.05 M Na₂HPO4 solution. Ka (H₂PO4) = 6.2.10-8 mol/L. (You should to round the answer to the nearest tenth (according to the rules). Example 3.44 =3.4; 3.46=3.5) O a. pH=8.7 O b. pH=6.8 O c. pH=6.5 O d. pH=5.3

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter13: Acids And Bases
Section: Chapter Questions
Problem 31QAP: What is the pH of a solution obtained by adding 13.0 g of NaOH to 795 mL of a 0.200 M solution of...
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What is the pH of a buffer solution, prepared by mixing of 20 mL 0.1 M NaH₂PO4 solution and 100 mL 0.05 M Na₂HPO4 solution. K₂(H₂PO4¯) = 6.2.10-8 mol/L. (You should to round the answer to the nearest tenth (according to the rules). Example 3.44 =3.4; 3.46=3.5) a. pH=8.7 O b. pH=6.8 c. pH=6.5 O d. pH=5.3
Transcribed Image Text:What is the pH of a buffer solution, prepared by mixing of 20 mL 0.1 M NaH₂PO4 solution and 100 mL 0.05 M Na₂HPO4 solution. K₂(H₂PO4¯) = 6.2.10-8 mol/L. (You should to round the answer to the nearest tenth (according to the rules). Example 3.44 =3.4; 3.46=3.5) a. pH=8.7 O b. pH=6.8 c. pH=6.5 O d. pH=5.3
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