Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese(IV) oxide.
4HCl(aq)+MnO₂(s)⟶MnCl₂(aq)+2H₂O(l)+Cl₂(g)
A sample of 39.9 g MnO2 is added to a solution containing 47.9 g HCl.
What is the theoretical yield of Cl2?
If the yield of the reaction is 77.9%, what is the actual yield of chlorine?