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Question
When ammonium chloride and ammonium hydroxide are added to a solution containing both Al3+ and Ca2+ ions, which ion is precipitated first and why?
One Line Answer
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Solution
Al3+ ions are precipitated first as Al(OH)3 because Ksp for Al(OH)3 is lower than that of Ca(OH)2.
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Ionic Equilibria - Common Ion Effect Example
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