Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid,...

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Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid,...

Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl(aq), as described by the chemical equation

MnO2(s)+4HCl(aq)⟶MnCl2(aq)+2H2O(l)+Cl2(g)

How much MnO2(s) should be added to excess HCl(aq) to obtain 155 mL Cl2(g) at 25 °C and 755 Torr?

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