Question

when you add water to sufer dioxide one put a blue litmus paper in it why does it turn red

Answer 1

Answer:

number of mole of water in 18 get of water will be molecular mass of water=18

Answer 2

Answer:

Sulphur dioxide reacts to the addition of water, becoming acidic, that is an acid solution. It is then correctly names sulphuric acid. It will change the blue litmus paper to red, but if the litmus paper is red to begin with, the colour does not change.