Answer to Question #263543 in General Chemistry for diamond

Question

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 245 mL Cl2(g) at 25 °C and 715 Torr?

Answer 1

Molar mass of Cl2= 70.9

= 245/70.9= 3.46moles

Molar mass of MnO2= 86.94

= 3.46×86.94=300.43g