Q:

What is pH paper used for?

A:

Quick Answer

A piece of pH indicator paper is used to gauge the acidity or alkalinity of a solution. Different types of pH indicator paper are used depending on the type of test and level of accuracy required, such as red or blue litmus paper.

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Full Answer

The pH scale ranges from 0 to 14, where a measurement of 0-6 denotes acidity, 7 represents neutral, and 8-14 shows alkalinity. This measurement is obtained by comparing the color of the indicator paper to a chart after dropping a small amount of the solution onto the paper. Indicator paper should never be dipped into the substance being tested, as the dye from the paper can contaminate the solution.

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