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Al(NO3) has higher coagulating power the...

`Al(NO_3)` has higher coagulating power then `MgSO_4` for `Fe(OH)_3` sol.

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False : `Fe(OH)_3` is a positive sol. and therefore, `SO_4^(2-)` ion `(MgSO_4)` has higher coagulation power than `NO_3^(-)` ion `[Al(NO_3)_3]`.
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