Question

What will haopen when-

(i)red litmus paper is introduced into a solution of NaSO_4?

(ii)methyl orange is added to dil. HCL?

(iii)a drop phenolpthalein is added to solution of lime water?

(iv)blue litmus is introduced into a solution of ferric chloride?

Answer 1

1. Solution of Na₂SO₄ is neutral, therefore, no colour change will be observed when red litmus paper is introduced in thus solution.
2. The orange colour of methyl orange changes to red in dil. HCl
3. The colourless solution changes to pink when a drop phenolpthalein is added to solution of lime water.
4. Solution of ferric chloride is acidic; therefore, blue litmus will change to red in this solution.