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(a)
Interpretation:
The buffer capacity of 0.250 M lactic acid and 0.250 M lactate ion should be determined.
Concept introduction:
A buffer is a solution which resists change in pH on addition of small amount of acid or base. A buffer is prepared by mixing a weak acid with its conjugate base ion or a weak base and its conjugate acid ion.
For example the mixture of acetic acid and its conjugate base acetate ion will form a buffer solution.
The pH of a buffer solution is determined with the following equation
Also known as Henderson Hasselbalch’s equation
The buffer capacity is the capacity of a buffer to which it can resist a major change in pH on addition of acid or base.
It is dependent on the ratio of concentration of weak acid and concentration of its conjugate base.
(b)
Interpretation:
The buffer capacity of 0.250 M lactic acid and 0.125 M lactate ion should be determined.
Concept introduction: A buffer is a solution which resists change in pH on addition of small amount of acid or base. A buffer is prepared by mixing a weak acid with its conjugate base ion or a weak base and its conjugate acid ion.
For example the mixture of acetic acid and its conjugate base acetate ion will form a buffer solution.
The pH of a buffer solution is determined with the following equation.
Also known as Henderson Hasselbalch’s equation
The buffer capacity is the capacity of a buffer to which it can resist a major change in pH on addition of acid or base.
It is dependent on the ratio of concentration of weak acid and concentration of its conjugate base
(c)
Interpretation:
The buffer capacity of 0.250 M lactic acid and 0.0800 M lactate ion should be determined.
Concept introduction: A buffer is a solution which resists change in pH on addition of small amount of acid or base. A buffer is prepared by mixing a weak acid with its conjugate base ion or a weak base and its conjugate acid ion.
For example the mixture of acetic acid and its conjugate base acetate ion will form a buffer solution.
The pH of a buffer solution is determined with the following equation.
Also known as Henderson Hasselbalch’s equation
The buffer capacity is the capacity of a buffer to which it can resist a major change in pH on addition of acid or base.
It is dependent on the ratio of concentration of weak acid and concentration of its conjugate base
(d)
Interpretation:
The buffer capacity of 0.250 M lactic acid and 0.0500 M lactate ion should be determined.
Concept introduction:
A buffer is a solution which resists change in pH on addition of small amount of acid or base. A buffer is prepared by mixing a weak acid with its conjugate base ion or a weak base and its conjugate acid ion.
For example the mixture of acetic acid and its conjugate base acetate ion will form a buffer solution.
The pH of a buffer solution is determined with the following equation
Also known as Henderson Hasselbalch’s equation
The buffer capacity is the capacity of a buffer to which it can resist a major change in pH on addition of acid or base.
It is dependent on the ratio of concentration of weak acid and concentration of its conjugate base
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Chapter 14 Solutions
Bundle: Chemistry: Principles and Reactions, 8th, Loose-Leaf + OWLv2, 1 term (6 months) Printed Access Card
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