How is the pH paper used to find the pH of a solution?
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With the help of a dropper one drop of the solution is placed on the strip of the pH paper. The colour developed on the pH paper is compared with the colour and the corresponding pH value given on the chart of the pH paper.
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Answer: See in the picture u can clearly see that it works like that of 'Litmus paper' more like its solution when added to the acids/base to depict the colour change...
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