41. What is the pH of a 0.0100 M sodium benzoate solution? K.(HC-H50₂) = 6,3 × 10-³ a. 0.38 b. 5.90 c. 8.10 d. 13.62 42.

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41 What Is The Ph Of A 0 0100 M Sodium Benzoate Solution K Hc H50 6 3 10 A 0 38 B 5 90 C 8 10 D 13 62 42 1 (29.54 KiB) Viewed 78 times

41. What is the pH of a 0.0100 M sodium benzoate solution? K.(HC-H50₂) = 6,3 × 10-³ a. 0.38 b. 5.90 c. 8.10 d. 13.62 42. A solution is prepared by adding 0.10 mol of potassium acetate, KCH,COO, to 1.00 L of water. Which statement about the solution is correct? a. The solution is basic. b. The solution is neutral. c. The solution is acidic. d. The values for K, and Ks for the species in solution must be known before a prediction can be made. 43. Which of the following acids should be used to prepare a buffer with a pH of 4.5? a. CeHsOCOOH, K₁=1.0 × 10-3 b. H₂CsH4O4, K₁=2.9 x 10-4 c. CH₂COOH, K. 1.8 x 10-5 d. HC607, K₁= 4.0 x 10-6