Explain oxidation method of preparation of colloids with two examples. – InterviewSolution

1.	Explain oxidation method of preparation of colloids with two examples.
Answer» Solution :Oxidation : (i) When hydroiodic ACID is TREATED with iodic acid `I_(2)` sol is obtained. `HIO_3 + 5HI to 3H_2O + 3I_2`(sol) (ii) When `O_(2)` is PASSED through `H_2Se` , a sol of SELENIUM is obtained. ` H_2Se + O_2to 2H_2O + Se `(sol )

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