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)
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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)
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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)
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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)
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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)
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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)
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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
OWLv2 for Moore/Stanitski's Chemistry: The Molecular Science, 5th Edition, [Instant Access], 1 term (6 months)
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- Consider citric acid, H3C6H5O7, added to many soft drinks. The equilibrium constants for its step-wise ionization areKa1=7.5104 ,Ka2=1.7105, andKa3=4.0107. Write the overall net ionic equation and calculate K for the complete ionization of citric acid.arrow_forwardWrite the Lewis structures of the reactants and product of each of the following equations, and identify the Lewis acid and the Lewis base in each: (a) CS2+SHHCS3 (b) BF3+FBF4 (c) I+SnI2SnI3 (d) Al(OH)3+OHAl(OH)4 (e) F+SO3SFO3arrow_forwardWhy have chemists not tabulated the fraction ionized for different acids? Such a table would make problems such as calculating the pH of an acid solution quite simple.arrow_forward
- Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
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