500 ml of a sample cod of water required 19.6 mg
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COD determines the quantity of oxygen required to oxidize the organic matter in water ... The organic matter present in the sample gets oxidized completely by potassium dichromate (K2Cr207) in the presence of sulphuric acid (H2SO4), silver
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39. 500 mL of a sample of water required 19.6 mg of K2Cr2O7 for the oxidation of dissolved organic matter in it in the presence of H2SO4. The COD of water sample is. 3.2 ppm.
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