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Carbohydrate

explain :if f...

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explain :if fecl3is added to excess of hot water,why a positively charged sol of hydrated ferric oxide is formed due to adsorption of fe3+ and if fecl3 is added to naoh solution,why a negatively charged sol is formed due to adsorption of oh-

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Q. IN colloides ....in preferential adoption of ions ......plz explain this example ..that ..
Fecl₃ when added to hot water , a positively charged Sol of hydrated ferric oxide is formed due to adsorption. Of fe³⁺ ions ......
How ...???
( Reffered from NCERT )

Q. When dilute aqueous solution of

A g N O_{3}

(excess) is added to

K I

solution, positively charged sol particles of

A g I

are formed due to adsorption of ion :

Q. When dilute aqueous solution of

A g N O_{3}

(excess) is added to

K I

solution, positively charge sol of

A g I

in formed due to adsorption of:

Q. Assertion :When KI solution is added to

A g N O_{3}

solution, negatively charged sol results. Reason: Negative charge of sol is due to preferential adsorption of iodide ions from the dispersion medium.

Q. Freshly obtained

S n O_{2}

is added to water containing a little

H C l

. The sol obtained would be _____ due to preferential adsorption of ____ ions.

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