Chlorine is prepared in the laboratory by treating manganese dioxide (MnO2 ) with aqueous hydrochloric acid according to the reaction 4 HCl (aq) + MnO2 (s)
→ 2H2O (l) + MnCl2 (aq) + Cl2 (g) How many grams of HCl react with 5.0 g of manganese dioxide?
NCERT Class XII
Chemistry - Main Course Book I
Chapter 1. Some Basic Conpepts of Chemistry