Question

how pH paper can be prepared​

Answer 1

Answer:

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Explanation:

PH papers are paper infused, or saturated, with pH indicators or more frequently, a mixture of indicators. They are used to test for alkaline or acidity of a solution or substance such as soil. pH papers are usually sold as strips. These strips of paper (or sometimes fabric) change color when they come in contact with the material or solution being tested. To use it, you immerse it in the material or solution, wait for the number of seconds listed on the instructions, remove the paper and compare the color change to a scale. The scale will tell you if the substance is acidic or alkaline, and to what degree.