Question

explain the universal indicator
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Answer 1

mixture of dyes that changes colour gradually over a range of pH and is used (especially as indicator paper) in testing for acids and alkalis.

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Answer 2

• A universal indicator is a combination of pH indicator solutions that may be used to determine a solution's pH over a wide range of values.
• Universal indicators are calculated using a variety of methods, the majority of which are based on a patented formula created by Yamada in 1933.
• Thymol blue, methyl red, bromothymol blue, and phenolphthalein are some of the most prevalent ingredients in a combination.