Question

Dry crystals of citric acid are placed on a dry blue litmus paper the colour of the litmus paper does not turns into red colors give reasons

Answer 1

Answer:

No,the colour will not change.

Explanation:

In order to have a change in colour of litmus paper, it is the basic requirement that the given substance be dissolved in water.

So, it doesn't matter if the given substance in insoluble in water or it is in the dry form, unless the solution is formed, the pH won't change.

Answer 2

Answer:

Because Ions are produced only in aqueous medium and presence of H+ Ions are responsible for the existence of acidic properties. Hence, acids show acidic behaviour only in the presence of water and not in its absence. Therefore, here the colour of the litmus paper doesn't turns into red colour.