Interpretation : The buffer system of phosphate buffer has to be explained.
Concept Introduction : A buffer is a solution that retains the pH of a solution irrespective of the addition of small amounts of acids or bases.
Answer to Problem 90A
The buffer system of phosphate buffer is given as
Explanation of Solution
A weak acid and one of its salts or a weak base and one of its salts are solutions that are used as buffers.
Buffers are formed by the combination of weak acids or bases with their respective salts.
The phosphate buffer is
The base when added to the buffer reacts with
The acid when added to the buffer reacts with
Since the buffer is taken for weak acid and weak base, there is only minimal change in pH.
Chapter 19 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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