Question

An alkali metal (x) forms a hydrated sulphate, X₂SO₂.10H₂O. Is the metal more likely to he sodium (or) potassium.

Answer 1

X forms X₂SO₂.10H₂O. The metal is more likely be sodium. So X is Na₂SO₄ . 10H₂O. It is otherwise called as Glauber’s salt.