Aluminum ion may be precipitated from aqueous solution by addition of hydroxide ion
Chapter 15, Problem 68(choose chapter or problem)
Aluminum ion may be precipitated from aqueous solution by addition of hydroxide ion, forming Al(OH)3. A large excess of hydroxide ion must not be added, however, because the precipitate of Al(OH)3 will redissolve as a soluble compound containing aluminum ions and hydroxide ions begins to form. How many grams of solid NaOH should be added to 10.0 mL of 0.250 M AlCl3 to just precipitate all the aluminum?
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