What is the volume (in ml) of 0.1 M potassium permanganate solution required tocompletely oxidize 100 ml of 0.5M ferrous sulphate solution in acidic medium?
20
200
50
100
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35.4 ml of HCl is required for the neutralization of a solution containing 0.275 g of sodium hydroxide. The normality of hydrochloric acid is