1.

How do you identify the following cations in their aqueous solutions by using caustic soda solution ? (i) Fe^(+2) (ii) Zn^(+2) (iii) Al^(+3)

Answer»

Solution :(i) `FE^(+2)` gives light green precipitate of ferrous hydroxide `(Fe(OH)_(2))`
(ii) `Zn^(+2)` gives white precipitate of zinc hydroxide `(Zn(OH)_(2))`
(III) `Al^(+3)` gives white gelationous precipitate of ALUMINIUM hydroxide `(Al(OH)_(3))`


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