Concept explainers
(a)
Interpretation:
pH of
Concept Introduction:
pH definition:
The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale.
The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration.
The
(a)
Explanation of Solution
Given,
Volume of acid in liters:
Original mole
The given solution contains only
(b)
Interpretation:
pH of the solution has to be calculated, after addition of
Concept Introduction:
Refer part (a).
(b)
Explanation of Solution
After the addition of the titrant,
To determine the equilibrium concentration of
(c)
Interpretation:
pH of the solution has to be calculated, after addition of
Concept Introduction:
Refer part (a).
(c)
Explanation of Solution
Used the equation in (b), again
Volume of base (L)
(d)
Interpretation:
pH of the solution has to be calculated, after addition of
Concept Introduction:
Refer part (a).
(d)
Explanation of Solution
The volume and total moles of base can be calculated as
Total moles of
(e)
Interpretation:
pH of the solution has to be calculated, after addition of
Concept Introduction:
Refer part (a).
(e)
Explanation of Solution
At equivalent point, the moles of base begin to exceed the moles of acid, so we adapt the expression we used in (b) for a solution with excess base to determine the equilibrium concentration of
The solution has a
(f)
Interpretation:
pH of the solution has to be calculated, after addition of
Concept Introduction:
Refer part (a).
(f)
Explanation of Solution
The pH of equivalent point of titrant can be calculated as
Hence, the results in a pH verses volume of titrant to make a titration curve, including equivalence point:
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Chapter 15 Solutions
Chemistry: The Molecular Science
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