Consider the Fe(OH)3 sols obtained by the following methods:
(I) FeCl3 is added to excess of hot water and colloidal solution X is obtained
(II) FeCl3 is added to NaOH and colloidal solution Y is obtained
The charge on the colloidal particles present in X and Y are respectively
Positive, Positive
Positive, Negative
Negative, Positive
Negative, Negative
When is added to hot water, then the precipitate of hydrated ferric oxide adsorbs
and a postively charged sol is obtained as represented
However, when is added to NaOH, then the precipitate of hydrated ferric oxide adsorbs
and a negatively charged sol is obtained as represented
Hence, the correct answer is Option(2)
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