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Question
Which of the following statements concerning amphoteric hydroxides is/are correct?1) The amphoteric hydroxide of aluminum(III) is commercially used to separate aluminum(III) oxide from impurities in the aluminum ore bauxite.
2) Amphoteric hydroxides form soluble complex ions at high pH's.
3) The amphoteric hydroxide, Zn(OH)2, can be precipitated by increasing the pH of a solution containing Zn2+(aq) or lowering the pH of a solution containing Zn(OH)42-.
A) 1 only
B) 2 only
C) 3 only
D) 1 and 2
E) 1, 2, and 3
Answer
This answer is hidden. It contains 1 characters.
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