Manganese dioxide when reacts with hydrochloric acid forms Manganese chloride, water andPage 3 of 15
chlorine. (a) Express the above reaction in the form of a balanced chemical equation. (b) Identify (i) reducing agent, (ii) oxidising agent
a) MnO2 + 4HCl MnCl2 + Cl2 + 2H2O
b) (i) Reducing agent- HCl
Since it reduces MnO2 by taking oxygen atoms from it.
(ii) Oxidising agent- MnO2
Since it oxidises HCl to Cl2 which loses the hydrogen atom.
b) (i) Reducing agent- HCl
Since it reduces MnO2 by taking oxygen atoms from it.
(ii) Oxidising agent- MnO2
Since it oxidises HCl to Cl2 which loses the hydrogen atom.