Question 2:

Write the balanced equation for the following chemical reactions.

(i) Hydrogen + Chlorine → Hydrogen chloride

(ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride

(iii) Sodium + Water → Sodium hydroxide + Hydrogen

Answer:

(i) H_2(g) + Cl_2(g) → 2HCl_(g)

(ii) 3BaCl_2(s) + Al₂(SO₄)_3(s) → 3BaSO_4(s) + 2AlCl_3(s)

(iii) 2Na_(s) + 2H₂O_(l) → 2NaOH_(aq) + H_2(g)

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