Q19Short answer
PbO and PbO2 react with HCl according to following chemical equations : 2PbO + 4HCl 2PbCl2 + 2H2O PbO2 + 4HCl PbCl2 + Cl2 + 2H2O Why do these compounds differ in their reactivity?
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2PbO + 4HCl 2PbCl2 + 2H2O (Acid base reaction) PbO2 + 4HCl PbCl2 + Cl2 + 2H2O (Redox reaction) (Hint : Note the oxidation number of lead in the oxides)