Write balanced equations for the following:
(i) NaCl is heated with sulphuric acid in the presence of MnO2.
(ii) Chlorine gas is passed into a solution of NaI in water.
1) 4NaCl + MnO2 + 4H2SO4→ MnCl2 + 4NaHSO4 + 2H2O + Cl2
Manganese(IV) oxide reacts with sodium chloride and sulfuric acid to produce manganese(II) chloride, chlorine, sodium bisulfate and water.
This reaction takes place at a temperature near 100°C.
2) Cl2 + NaI → 2NaCl + I2
Chlorine reacts with sodium iodide to produce sodium chloride and iodine.
Chlorine - diluted solution.
Sodium iodide - cold solution.