Question: A solution contains 1 . 2 3 times 1 0 - 2 M potassium phosphate and 1 . 4 4 times 1 0

A solution contains 1.23\times 10-2 M potassium phosphate and 1.44\times 10-2 M sodium hydroxide.
Solid chromium(III) acetate is added slowly to this mixture.
What is the concentration of hydroxide ion when phosphate ion begins to precipitate?
[hydroxide]=
M

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