Question

we have to observe what will happen if we put a particular substance on blue and red litmus paper

Please help ​

Answer 1

Answer:

The main use of litmus is to test whether a solution is acidic or basic. Light-blue litmus paper turns red under acidic conditions, and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple.

Answer 2

Light-blue litmus paper turns red under acidic conditions, and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). ... Under acidic conditions, the solution is red, and under alkaline conditions, the solution is blue.