The pH of ammonium phosphate solution, if pka of phosphoric acid and pkb of ammonium hydroxide are 5.23 and 4.75 respectively, is ___________.
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Correct Answer: 7
Solution and Explanation
\(= 7 + \frac{1}{2}(5.23 - 4.75) = 7 + 0.24 = 7.24\).
As the answer is entered as an integer, it is rounded to 7.
Answer: 7
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