Manganese (IV) oxide, lead (IV) oxide and red lead (Pb₃O₄) react with concentrated hydrochloric acid to liberate chlorine.
(a) Name the common property exhibited by these metal oxides.
(b) Write the equation for the reaction of concentrated hydrochloric acid with Pb₃O₄.

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Solution

(a) Metal oxides react with hydrochloric acid to liberate chlorine gas. In these reactions, hydrochloric acid is oxidised to chlorine, thereby, depicting its reducing property.

(b) Reaction with concentrated hydrochloric acid can be represented as follows:

Pb₃O₄(s) + 8HCl(aq) → 3PbCl₂(aq) + 4H₂O(l) + Cl₂(g)
Trilead Lead chloride
tetroxide
(red)

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Manganese (IV) oxide, lead (IV) oxide and red lead (Pb3O4) react with concentrated hydrochloric acid to liberate chlorine. (a) Name the common property exhibited by these metal oxides. (b) Write the equation for the reaction of concentrated hydrochloric acid with Pb3O4.

Manganese (IV) oxide, lead (IV) oxide and red lead (Pb₃O₄) react with concentrated hydrochloric acid to liberate chlorine.
(a) Name the common property exhibited by these metal oxides.
(b) Write the equation for the reaction of concentrated hydrochloric acid with Pb₃O₄.