Question

When you add water to
sulfur dioxide and put a blue
Litmus paper in it, why does
it turn red?​

Answer 1

because it is a acid

non metal oxides react with water to form acids

Answer 2

Explanation:

In water hydrochloric acid is there

So,you add water to sulfur dioxide and put blue litmus paper in it ,it turns red.

so acid is turns into blue litmus to red