Problem

Problem

Chlorine gas is produced in the laboratory by the reaction of hydrochloric acid, HCl(aq)\text{HCl}(\text{aq}) , with manganese(IV) oxide, MnO2(s)\text{MnO}_2(\text{s}) : MnO2(s)+4HCl(aq)→MnCl2(aq)+Cl2(g)+2H2O(l)\text{MnO}_2(\text{s}) + 4\text{HCl}(\text{aq}) \rightarrow \text{MnCl}_2(\text{aq}) + \text{Cl}_2(\text{g}) + 2\text{H}_2\text{O}(\text{l}) A 17.4 g sample of manganese(IV) oxide was added to 0.100 dm3\text{dm}^3 of 10.0 mol dm−3\text{dm}^{-3} hydrochloric acid, and the mixture was heated until the reaction was complete.

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