Question

Balance the following chemical reactions: Mno2+Hcl=MnCl2+H2O+Cl2 By redox reaction method

Answer 1

MnO2 + 4HCl -----------> MnCl2 + Cl2 + H2O

The oxidation state of Cl in HCL is -1 and it changes to 0 in the product Cl2. Increase in oxidation number occurs, so Cl- is oxidized.

In MnO2, Mn is +4 state and this becomes +2 in product MnCl2. So decrease of oxidation number occurs, hence Mn is reduced.

Hence, MnO2 is the oxidizing agent and HCl is the reducing agent.

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