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Aqueous ammonia is used as a precipitati...

Aqueous ammonia is used as a precipitating reagent for `Al^(3+)` ions as `Al(OH)_(3)` rather than aqueous `NaOH`, because:

A

`NH_(4)^(+)`is weak base

B

NaOH is a strong base

C

NaOH forms` [Al(OH)_(4)]^(-)`ions

D

NaOH forms `[Al(OH)_(2)]^(+)` ions

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Al(OH)_(3) is

Assertion:- NH_(4)OH is used as a precipitating reagent for Al^(+3) ions rather than NaOH solution. Reason:- NaOH forms water soluble complex Na[Al(OH_(4))

Percipation of Al^(3+) (aq) as Al(OH)_(3) by CO_(2) shows that:

AlCl_(3)+3NaOH to Al(OH)_(3)darr+3NaCl

Which of the following are not more basic than Al(OH)_(3) ?

Assertion : Al^(3+) ions have greater precipitating power for As_(2)S_(3) than N_(a)^(+) ions. Reason : As_(2)S_(3) sol is a negatively charged sol.

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