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Question

The dissolution of Al(OH)3 by a solution of NaOH results in the formation of:

A
[Al(H2O)4(OH)2]+
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B
[Al(H2O)3(OH)3]
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C
[Al(H2O)2(OH)4]
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D
[Al(H2O)6](OH)3
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Solution

The correct option is C [Al(H2O)2(OH)4]

Al(OH)3 dissolves in NaOH solution to give [Al(OH)4] ion which forms an octahedral complex species [Al(OH)4(H2O)2]

Al(OH)3NaOH(aq)2H2O−−[Al(OH)4(H2O)2]aq+Na+(aq)

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