Question

A gas 'X' is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of a colourless gas 'Y'. Identify 'X' and 'Y'. (a) X = CO₂, Y = Cl₂ (b) X = Cl₂, Y = CO₂(c) X = Cl₂, Y = H₂ (d) X = H₂, Y = Cl₂

Answer 1

2Cl2 + 2H2O → 4HCl + O2

Mg + 2 HCl = MgCl2 + H2

ans: (c)