Question

A powder X is burnt in a deflagrating spoon and heated, as soon as it starts burning it is introduced in a glass jar taking care that the gas does not escape. A small amount of water is added to the jar and shaken well, it forms solution Y. Identify X and Y.

Answer 1

as only suphur burn in a
Deglagarating spoon, The X is suphur (s)
as sulphur is heated ,the following reaction will took place

S(s) + O₂(g) → SO₂(g)
SO2 gas is formed after burning
When a water is added to SO2,then
foowling reaction take place

SO₂(g) + H₂O(l) → H₂SO₃(aq)

so Y IS H2SO3