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4.19 Sufficient Na2CO, is added to water to yield a concentration of 0.01 M. (a) What is the pH of the solution at 25C if

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4.19 Sufficient Na2CO, is added to water to yield a concentration of 0.01 M. (a) What is the pH of the solution at 25C if activity corrections are ignored? (b). What is the pH of the solution at 25C if activity corrections are included? (c) What is the pH of the solution at 15C if activity corrections are included? (At 15C, pky = 14.34, PKA1 = 6.41, and PKA2 = 10.42. These values were calculated using relationships developed in Chap. 3.) w

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