A 65-mL solution of 0.40 M Al(NO3)3 is mixed with 125 mL of 0.17 M iron(II) nitrate. Solid sodium hydroxide is then added without a change in volume.
(a) Which will precipitate first, Al(OH)3 or Fe(OH)2?
(b) What is [OH–] when the first compound begins to precipitate?
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