The pH of ammonium phosphate solution, if pk a of phosphoric acid and pk b of ammonium hydroxide are 5 . 23…

The pH of ammonium phosphate solution, if pka of phosphoric acid and pkb of ammonium hydroxide are 5.23 and 4.75 respectively, is

Solution

Since NH43PO4 is salt of weak acid H3PO4 and weak base NH4OH

pH=7+12pka-pkb

=7+125.23-4.75

=7.247

Asked in: JEE Main 2021 (26 Feb Shift 2)

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