Question

If a solution turns red litmus blue, then what is the range of the pH of the solution?

Answer 1

Part 1: Litmus paper

1. Litmus is a universal indicator which is used to check the acidic and basic nature of a solution.
2. Red litmus paper is used to check the pH of the base solution.
3. While blue litmus paper is used to check the pH of the acid solution.

Part 2: Range of pH

1. If a red litmus comes in contact with the base, then it turns its color into blue.
2. The pH range of the base solution lies between 7 and 14.