How to get Cl2 from MnO2?

From this task it follows that it is necessary to write the reaction equations, according to which it is possible to obtain chlorine from tetravalent manganese oxide. In order to obtain chlorine, it is necessary to add hydrochloric acid to the manganese oxide, as a result, the following reaction is obtained: (We equalize this ratio, set the coefficient 4 in front of the hydrochloric acid, set 2 in front of the water).
MnO2 + 4HCl = MnCl2 + Cl2 + 2H2O



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