PbO and PbO2 react with HCl according


PbO and PbO2 react with HCl according to the following chemical equations:

2PbO + 4HCl → 2PbCl2 + 2H2O

PbO2 + 4HCl → PbCl2 + Cl2 + 2H2O

Why do these compounds differ in their reactivity?


In reaction (i), none of the atoms changes. Therefore, it is not a redox reaction. It is an acid-base reaction because PbO is a basic oxide which reacts with HCl acid.

The reaction (ii) is a redox reaction in which PbO2 gets reduced and acts as an oxidizing agent.

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