e6503375_009__Tanpa_Klasifikasi_Lugansk__3
[0] 112. [1] To determine the sufficient water decontamination, the amount of residual chlorine which is left after chloration is taken into consideration. What is the method of qualitative determination of residual chlorine in drinking water after its chloration? [2] *Adding of potassium iodide and starch to water samples [4] Addition of acid to the water sample [5] Addition of aluminium sulfuric oxide to the water sample up to the formation of hydroxide flakes. [6] Addition of manganese peroxide to the water sample [3] 
Fitration of the water sample by up to rosy colour of solution Greese reagent
Krok 2009: Tanpa Klasifikasi Lugansk
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