Chapter 2: Acids, Bases and Salts

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Q
Acids,Bases, and Salts

Question:

You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?

Answer:

Litmus is an indicator that is used to check the nature of the solution. The red litmus paper converts to blue in alkaline medium while the blue litmus converts to red in an acidic medium. So, when the red litmus paper is added to a distilled water and an acidic solution, it shows no change in colour but when it is added to an alkaline solution, it converts to blue.


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