Write chemical equations for the preparation of sols : (a) Gold sol by reduction. (b) hydrated ferric oxide sol by hydrolysis

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Solution

Dear Student,

The reaction scheme are as given below,

$(a) G o l d s o l b y r e d u c t i o n 2 A u C l_{3} + 3 S n C l_{2} \overset{R e d u c t i o n}{\to} 2 A u (s o l) + 3 S n C l_{4} (b) H y d r a t e d f e r r i c o x i d e s o l b y h y d r o l y s i s F e C l_{3} + 3 H_{2} O \overset{H y d r o l y s i s}{\to} F e (O H)_{3} (s o l) (o r) F e_{2} O_{3} x H_{2} O) + 3 H C l$

Regards.

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