Question

when you add water to suffer dioxide and put it Why does litmus paper in it why does it turn red
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Answer 1

its turn blue litmus to red because its showing that it is acidic

Answer 2

Explanation:

When you add water to sulphur dioxide then Sulphuric acid is formed.

The reaction is:

H₂O + SO₂ → H₂SO₄

Here, the product formed is in acidic medium.

So, If we put a blue litmus paper in the sulphuric acid the H⁺ ions in it will turn blue coloured litmus paper into red.

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