Chemistry, asked by vivekmandkriya, 6 months ago

A 25 ml of sewage water sample was refluxed with 10 ml 0f 0.25 N K2Cr2 O7 solution. The untreated potassium dichromate requires 6.5 ml of 0.1 N FAS. 10 ml of potassium dichromate solution and 25 ml distilled water , under the same condition as sample required 27 ml of 0.1 n FAS. Calculate the COD of sewage.

Answers

Answered by yashonandannarahari

Answer:

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Explanation:

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