i. An aqueous solution of sulphur IV oxide.
Cl2 (g) +SO2 (g) +2H2O(g) → H2SO4 (aq) + 2HCl(aq)
ii. A metal (No metal is specified)
ii. 2X +Cl2 → 2XCl2
OR ⇒ X +Cl2 → XCl2
OR ⇒ 2X+3Cl2 → 2XCl3
iii. Potassium iodide
2Kl (aq) + Cl2(g) → 2KCl (aq) +I2(s)
iv. Ethene
Cl2+ C2H4 → C2H2Cl4
v. Ethyne
2Cl2 + C2H2 → C2H2Cl4