Question

What change will you observe if you test soap with litmus paper (red and blue)?

Answer 1

Litmus paper:

• Litmus paper is used to determine whether a solution/substance is acidic/alkaline.
• It works as a chemical indicator.
• Acids turn blue litmus red, whereas Bases turn red litmus blue.

Observations of soap with litmus paper:

• When soap is dissolved in water, it turns the solution alkaline.
• The red litmus turns blue in the solution while the blue litmus remains blue in the soap solution due to its alkaline nature.