A 20.0 mL solution containing 0.2 g impure H O reacts completely with 0.316 g of KMnO in acid soluti — Hydrogen Chemistry Question

Question

A 20.0 mL solution containing 0.2 g impure H O reacts completely with 0.316 g of KMnO in acid solution. The purity of H O (in%) is______ (mol. wt. of H O = 34 & mole wt. of KMnO = 158) 2 2 4 2 2 2 2 4