Question 1: Calculate the pH and the equilibrium concentration of CO32- in a 7.54×10-2 M carbonic acid solution, H2CO3 (aq).For H2CO3, Ka1 = 4.2×10-7 and Ka2 = 4.8×10-11 pH=??[CO32-] = Question 2: A 22.0 mL sample of 0.277 M trimethylamine, (CH3)3N, is titrated with 0.313 M nitric acid.At the equivalence point, the pH is ___?(CH3)3N kb=6.4x10^-5

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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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Question 1:
Calculate the pH and the equilibrium concentration of CO₃^2- in a 7.54×10^-2 M carbonic acid solution, H₂CO₃ (aq).

For H₂CO₃, K_a1 = 4.2×10^-7 and K_a2 = 4.8×10^-11

pH=??

[CO₃^2-] =

Question 2: A 22.0 mL sample of 0.277 M trimethylamine, (CH₃)₃N, is titrated with 0.313 M nitric acid.

At the equivalence point, the pH is ___?

(CH3)3N kb=6.4x10^-5

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