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Aluminium hydroxide is soluble in excess...

Aluminium hydroxide is soluble in excess of sodium hydroxide forming the ion

A

`AlO_(2)^(+3)`

B

`AlO_(2)^(-3)`

C

`AlO_(2)^(-)`

D

`AlO_(3)^(-)`

Text Solution

Verified by Experts

The correct Answer is:
C
`Al_(2)O_(3) + 2NaOH rarr 2NaAlO_(2) + H_(2)O`
`NaAlO_(2) (aq) hArr Na^(+)(aq) + AlO_(2)^(-) (aq)`
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