When a mixture of concentrated sulfuric acid, manganese oxide and sodium chloride is warmed, the chlorine gas is formed.
Step-by-step explanation:
NaCl + MnO₂ + H₂SO₄ -----> NaHSO₄ + MnSO₄ + H₂O + Cl₂
For balancing the equation
i) 2 Cl atoms are present at right side while 1 atom is present in left side.
Cl atoms get balanced by putting 2 before NaCl.
ii) Now there are 2 Na atoms present at left while 1 atom is present at the right side.
To balance it, put 2 before NaHSO₄.
iii) (SO₄) is 3 units on the right-hand side, 1 on the left-hand side.
Put a 3 before H₂SO₄ on the left-hand side, thus balancing the number of (SO₄) units.
iv) Balance the excess H atoms present at the left side, by putting a 2 before H₂O.
4NaCl + MnO2 + 4H2SO4 ---> MnCl2 + 4NaHSO4 + 2H2O + Cl2
When Manganese oxide reacts with sodium chloride and sulfuric acid, it gets warmed and produces manganese chloride, chlorine gas, sodium bisulfate, and water.
When this mixture is warmed it produces chlorine gas.