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Chemistry 9 Online
OpenStudy (anonymous):

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) + 2H20(l) + Cl2(g) How much MnO2(s) should be added to excess HCl(aq) to obtain 135 mL of Cl2(g) at 25 °C and 735 Torr?

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