1. THE SHIFTING OF AN EQUILIBRIUM: THE COMMON ION EFFECT Weak Acids and Weak Bases • • • Let us now examine weak acids and weak bases from an equilibrium point of view. In a solution of the weak acid, HC2H3O2, the following equilibrium exists: HC2H3O2 (aq) H+ (aq) + C2H3O2 (aq) To 3 mL of 0.10 M HC2H3O2 add a drop of methyl orange, then add 1 M NaC2H3O2 a few drops at a time, with mixing. Explain your observations in terms of the equilibrium equation and the common ion effect. Write the equilibrium equation and explain your observations in terms of the equilibrium equation and the common ion effect in your notebook.

1. THE SHIFTING OF AN EQUILIBRIUM: THE COMMON ION EFFECT Weak Acids and Weak Bases • • • Let us now examine weak acids and weak bases from an equilibrium point of view. In a solution of the weak acid, HC2H3O2, the following equilibrium exists: HC2H3O2 (aq) H+ (aq) + C2H3O2 (aq) To 3 mL of 0.10 M HC2H3O2 add a drop of methyl orange, then add 1 M NaC2H3O2 a few drops at a time, with mixing. Explain your observations in terms of the equilibrium equation and the common ion effect. Write the equilibrium equation and explain your observations in terms of the equilibrium equation and the common ion effect in your notebook.

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter14: Equilibria In Acid-base Solutions

Section: Chapter Questions

Problem 65QAP: Follow the directions of Question 64. Consider two beakers: Beaker A has a weak acid(K a=1105)....

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How many mEq of HCO3 are present in a solution that also contains 75 mEq of Na+, 83 mEq K+, 10 mEq Ca2+, and 153 mEq Cl?
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