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10 " mL of " a solution of H_(2)O_(2) of 10 violume strength decolourises 100 " mL of " KMnO_(4) solution acidified with dil H_(2)SO_(4). The amount of KMnO_(4) in the given solution is K=39, Mn=55) |
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Answer» 0.282 g `22400" mL of " O_(2) at STP =1 mol=4Eq` `100 " mL of " O_(2) STP=(4)/(22400)xx100=(1)/(56)EQ` " Eq of "`KMnO_(4)=" Eq of "O_(2)` `=(1)/(56)" Eq of "KMnO_(4)` `=(1)/(56)xx31.5g of KMnO_(4)` `=0.564g` `(Ew of KMnO_(4)` in acidic medium `=(MW)/(5)=31.5`) |
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