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Question

What are pH indicators?


A

Aqueous solution of either salts of strong acids or strong bases.

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B

Aqueous solution either salts of weak acids or weak bases.

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C

Aqueous solution of either weak acids or weak bases.

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D

Aqueous solution of either strong acids or strong bases.

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Solution

The correct option is C

Aqueous solution of either weak acids or weak bases.


pH indicators are aqueous solutions of either weak acids or weak bases. They are chemical detectors of hydrogen ions (H+1) and hydroxide ions (OH1) . It is added in small quantity to a solution to determine the pH.


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