Question

What happens when sulphur is powder added to water

Answer 1

The sulfur reacts with oxygen in the flask to form sulfur dioxide gas, which then dissolves in the water, forming sulfurous acid. The solution turns to a yellow color, indicating the acid formation. As more gas dissolves in solution, the solution becomes more acidic.

Answer 2

Sulphur is a yellow powder which floats on water; sulphuric acid is made by the oxidation of sulphur followed by hydration of the product.

Putting a layer of sulphur on water then adding one drop of oil is the classic demonstration of surface tension.