Direction: Solve for the pH or pOH of the following buffer solutions using theHenderson-Hasselbalch Equation.1. Find pH for buffer 0.12 M HNO2, 0.16M NaNO2 with the given Ka (HNO2)=4.5x104. 2. 0.20 mol of benzoic acid and 0.10 mol of sodium benzoate are dissolved inIL pure water. What is the pH of this solution? Given Ka of benzoic acid=6.3x105.3. What is the pH of a solution consisting of 0.15M NH.Cl (ammoniumchloride) and 1.5M NH3 (ammonia)? Kb of ammonia is 1.8x10 5.ACTIVITY 2: Acidic buffor

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Direction: Solve for the pH or pOH of the following buffer solutions using the Henderson-Hasselbalch Equation.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter15: Acid–base Equilibria

Section: Chapter Questions

Problem 55P

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Concept explainers

Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.

Question

Direction: Solve for the pH or pOH of the following buffer solutions using the
Henderson-Hasselbalch Equation.
1. Find pH for buffer 0.12 M HNO2, 0.16M NaNO2 with the given Ka (HNO2)=
4.5x104.

2. 0.20 mol of benzoic acid and 0.10 mol of sodium benzoate are dissolved in
IL pure water. What is the pH of this solution? Given Ka of benzoic acid=
6.3x105.
3. What is the pH of a solution consisting of 0.15M NH.Cl (ammonium
chloride) and 1.5M NH3 (ammonia)? Kb of ammonia is 1.8x10 5.
ACTIVITY 2: Acidic buffor

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