Chlorine can be prepared by reacting MCI with MnO2. The reaction is represented by the equation,
MnO2(s)+4HCI(aq.)→Cl2(g)+MnCl2(aq.)+2H2O(l)
Assuming that the reaction goes to completion, what mass of cone. HCI solution (36% HCI by mass) is needed to produce 2.5 g Cl2 ?