Question

Fill in the blanks. Choose from the following:

[oleum, two, three, acid, black, white, lead nitrate, ethene, sulphate, barium chloride solution, sulphur dioxide, normal]

Sulphur can be oxidised to ______ by conc. sulphuric acid.

Answer 1

Sulphur can be oxidised to sulphur dioxide by conc. sulphuric acid.

Explanation: 

Concentrated sulphuric acid acts as a strong oxidising agent. It oxidises sulphur to sulphur dioxide (SO₂).

\[\ce{S + 2H2SO4(conc{.}) -> 3SO2 + 2H2O}\]