From the given equilibrium equations and K a value for the given three reaction systems, The conjugate pair that would be best for preparing a buffer with a pH of 6.96 has to be given. Concept Introduction: Henderson-Hasselbalch equation: The pH can be calculated using Henderson-Hasselbalch equation as follows, pH = pK a + log [ conjugate base] [ weak acid] pH = pK a + log [ A - ] [ HA] Buffer: A buffer is solution containing a mixture of two substances. A buffer solution is characterized by the tendency to resist changes in pH when some limited of amount of acid or base are added to it. A buffer should possess either a weak acid and its conjugate anion that is a conjugate base (weak) or a weak base and its conjugate cation that is a conjugate acid (weak).
From the given equilibrium equations and K a value for the given three reaction systems, The conjugate pair that would be best for preparing a buffer with a pH of 6.96 has to be given. Concept Introduction: Henderson-Hasselbalch equation: The pH can be calculated using Henderson-Hasselbalch equation as follows, pH = pK a + log [ conjugate base] [ weak acid] pH = pK a + log [ A - ] [ HA] Buffer: A buffer is solution containing a mixture of two substances. A buffer solution is characterized by the tendency to resist changes in pH when some limited of amount of acid or base are added to it. A buffer should possess either a weak acid and its conjugate anion that is a conjugate base (weak) or a weak base and its conjugate cation that is a conjugate acid (weak).
Solution Summary: The author explains the Henderson-Hasselbalch equation and the conjugate pair that would be best for preparing a buffer with pH of 6.96.
Author: Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
A buffer is solution containing a mixture of two substances. A buffer solution is characterized by the tendency to resist changes in pH when some limited of amount of acid or base are added to it.
A buffer should possess either a weak acid and its conjugate anion that is a conjugate base (weak) or a weak base and its conjugate cation that is a conjugate acid (weak).
(b)
Interpretation Introduction
Interpretation:
From the given equilibrium equations and Ka value for the given three reaction systems,
The preparation of 100 mL of a buffer with a pH of 6.96 by assuming to have a 0.10 M solutions of each pair has to be explained
Concept Introduction:
Henderson-Hasselbalch equation:
The pH can be calculated using Henderson-Hasselbalch equation as follows,
A buffer is solution containing a mixture of two substances. A buffer solution is characterized by the tendency to resist changes in pH when some limited of amount of acid or base are added to it.
A buffer should possess either a weak acid and its conjugate anion that is a conjugate base (weak) or a weak base and its conjugate cation that is a conjugate acid (weak).
. The odor of spoiled butter is due in part to butanoic acid (HC4H7O2) which results from the breakdown of the fat in butter. A 0.100M solution of butanoic acid is 1.23% ionized.
Write the chemical equation for the ionization of this acid in water.
Write the Ka expression for this acid.
What is the equilibrium concentration of each product and the reactant?
The odor of spoiled butter is due in part to butanoic acid (HC4H7O2) which results from the breakdown of the fat in butter. A 0.100M solution of butanoic acid is 1.23% ionized.
a) Write the chemical equation for the ionization of this acid in water.
b) Write the Ka expression for this acid.
c) What is the equilibrium concentration of each product and the reactant?
d) What is the value of Ka?
e) What is the pH of the solution?
Consider the following acidic equilibrium: H₂CO₃(aq) + H₂O(l) ⇌ HCO₃⁻(aq) + H₃O⁺(aq). If you add NaHCO₃ to this solution, which of the following will occur?
A) The reaction quotient will decrease.
B) The reaction will shift in the reverse direction.
C) The equilibrium constant will increase.
D) No changes to the equilibrium positions will take place.
Chapter 16 Solutions
General Chemistry - Standalone book (MindTap Course List)
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