Question

7) Test tube p contain Nahcoa solution.
Test tube Q Contain lemon juice-on
introduring PH​

Answer 1

Answer:

On introducing pH paper strips in both the solutions, it is observed that the pH paper turns blue in I and red in'll.

Explanation:

Chemical formula of sodium bicarbonate is NaHCO3 and it is a basic salt composed of strong base (NaOH) and weak acid (H2CO3).

For an acid, the color of blue litmus paper will change into red. And when a solution is basic in nature then the color of red litmus paper will change into blue. As a solution of sodium bicarbonate is basic in nature so it will turn pH paper into blue.

Whereas lemon juice is acidic in nature and it will turn pH paper into red.