At 20.0 mL solution containing 0.2 g impure H2O2 reacts completely with 0.316 g of KMnO4 in acid solution. The purity of H2O2 (in %) is (mol. wt. of H2O2 = 34; mol. wt. of KMnO4 = 158 )
At 20.0 mL solution containing 0.2 g impure H2O2 reacts completely with 0.316 g of KMnO4 in acid solution. The purity of H2O2 (in %) is (mol. wt. of H2O2 = 34; mol. wt. of KMnO4 = 158 )
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1 Answer
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eq of H? O? = eq of KMnO?
(0.316 / 158) x 5 = 0.01
(0.01 x 17 / 0.2) x 100 = 85%
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