
Concept explainers
(a)
Interpretation:
Concept introduction:
pH definition:
The concentration of hydrogen ion is measured using
Acid ionization constant
The equilibrium expression for the reaction
Where
Base ionization constant
The equilibrium expression for the ionization of weak base
Where
Relationship between
(a)

Answer to Problem 19.54P
The pH of a solution made by mixing
Explanation of Solution
Given,
The balance equation is given below,
Potassium ions on the product side are written as separate spices because they have no effect on
Next calculate the volume of
Volume of
Determination the moles of
The equivalent point,
The
ICE Table of equilibrium,
Determination the liters of solution present at the equivalent point,
Volume
Concentration of
Molarity,
Next calculate
The equilibrium value for
So,
Using a reaction table for the equilibrium reaction of
Determination the hydroxide ion concentration from the
Calculation for
(b)
Interpretation:
Concept introduction:
pH definition:
The concentration of hydrogen ion is measured using
The
Acid ionization constant
The equilibrium expression for the reaction
Where
Base ionization constant
The equilibrium expression for the ionization of weak base
Where
Relationship between
(b)

Answer to Problem 19.54P
The pH of a solution made by mixing
Explanation of Solution
The balance equation is given below,
Potassium ions on the product side are written as separate spices because they have no effect on the
Next calculate the volume of
Volume of
The solution requires an equal volume to reach second equivalence point
Determination the moles of
An equal number of moles of
Determination the liters of solution present at the first equivalent point,
Volume
Determination the liters of solution present at the second equivalent point,
Volume
Concentration of
Molarity,
Concentration of
Molarity,
Next calculate
The equilibrium value for
The equilibrium value for
Determination the hydroxide ion concentration from the
Calculation for first equilibrium point:
Calculation for
Calculation for second equilibrium point:
Calculation for
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Chapter 19 Solutions
Loose Leaf for Chemistry: The Molecular Nature of Matter and Change
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