The equilibrium for the reaction between (CH,),NH, a weak base, and water is represented by the equation below. The table shows the pH of three solutions of (CH,),NH(aq) at 25°C. (CH3),NH(aq) + H2O(1) 2 (CH,),NH,*(aq) + OH (aq) K, = 5.4 x 10¬4 at 25°C [(CH3),NH] pH at 25°C 0.050 11.69 0.10 11.85 0.20 12.01 Which of the following equations can be used to correctly calculate the pH of a solution at 25° C that is 0.100 M (CH3),NH(aq) and 0.100 M (CH3),NH2C1(aq) ? pH = -log 1.0x10-14 5.4x10- pH = -log 5.4x10-4 1.0x10-14 pH 14.00 + (– log 5.4 x 10-4) %3D pH = (– log 5.4 × 10-4) + log(100)

The equilibrium for the reaction between (CH,),NH, a weak base, and water is represented by the equation below. The table shows the pH of three solutions of (CH,),NH(aq) at 25°C. (CH3),NH(aq) + H2O(1) 2 (CH,),NH,*(aq) + OH (aq) K, = 5.4 x 10¬4 at 25°C [(CH3),NH] pH at 25°C 0.050 11.69 0.10 11.85 0.20 12.01 Which of the following equations can be used to correctly calculate the pH of a solution at 25° C that is 0.100 M (CH3),NH(aq) and 0.100 M (CH3),NH2C1(aq) ? pH = -log 1.0x10-14 5.4x10- pH = -log 5.4x10-4 1.0x10-14 pH 14.00 + (– log 5.4 x 10-4) %3D pH = (– log 5.4 × 10-4) + log(100)

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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