Question

14. litmus paper is an indicator. What is the purpose of an indicator? What colour does it turn in an acidic medium and basic medium?
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Answer 1

Answer:

The main use of litmus is to test whether a solution is acidic or basic. 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).

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Answer 2

Explanation:

litmus paper determine whether the aqueous solution is basic or acidic. blue litmus turns red in acid and red turns blue in base.