question 27 QUESTION 27What is the pH of a buffer solution that is made of 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (C6H5COONA)? (Ką = 6.5 × 10-3 for benzoic acid)C6HSCO2H(aq) + H20(aq) 2 C6H5CO0'(aq) + H3O*(aq)QUESTION 28A 20.00-mL sample of 0.3000 M HBr is titrated with 0.15 M NAOH. What is the pH of the solution after 30.00 mL of NAOH have been added to the acid?HBr(aq) + NaOH(aq) → NaBr(aq) + H2O(aq)QUESTION 29MgCl2 are added dropwise to a 1.2 M NaF solution. The minimun concentration of MgCl2 needed to to initiate a precipitate of magnesium fluoride isM. [Ksp(MgF2) = 6.9 × 10-91X10-9MGF2(s) S Mg-(aq) + 2F(aq)

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QUESTION 27 What is the pH of a buffer solution that is made of 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (C6H5COONA)? (Ka = 6.5 x 10 for benzoic acid) C6HSCO2H(aq) + H20(aq) C6H5CO0"(aq) + H30*(aq)

QUESTION 27 What is the pH of a buffer solution that is made of 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (C6H5COONA)? (Ka = 6.5 x 10 for benzoic acid) C6HSCO2H(aq) + H20(aq) C6H5CO0"(aq) + H30*(aq)

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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