In a COD determination, 15.00 ml of 0.2500 M K2Cr207 was refluxed with 25.00 ml water...
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In a COD determination, 15.00 ml of 0.2500 M K2Cr207 was refluxed with 25.00 ml water sample. After refluxing and cooling, the remaining K2Cr207 was exactly titrated with 24.4 ml 0.5937 M (NH4)2Fe(SO4)2. What is the COD (in mg/L) of this water sample? In a COD determination, 15.00 ml of 0.2500 M K2Cr207 was refluxed with 25.00 ml water sample. After refluxing and cooling, the remaining K2Cr207 was exactly titrated with 24.4 ml 0.5937 M (NH4)2Fe(SO4)2. What is the COD (in mg/L) of this water sample?
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