NEETChemistryp Block Elements (Group 15, 16, 17 & 18)
What is the chemical reaction for the preparation of chlorine by heating manganese dioxide with concentrated hydrochloric acid (HCl)?
Options
- AMnO 2 + 4HCl → MnCl 2 + Cl 2 + 2H 2 O
- BMnO 2 + 4HCl → MnCl 4 + Cl 2 + 2H 2 O
- CMnCl 2 + 4HCl → MnO 2 + Cl 2 + 2H 2 O
- DMnCl 2 + H 2 SO 4 → MnO 2 + 2HCl + H 2 O
Correct answer
A. MnO 2 + 4HCl → MnCl 2 + Cl 2 + 2H 2 O
Step-by-step solution
Chlorine can be prepared by heating manganese dioxide (MnO 2 ) with concentrated hydrochloric acid (HCl) through the following reaction: MnO 2 + 4HCl → MnCl 2 + Cl 2 + 2H 2 O.