A chemical indicator that changes colors depending on the concentration of h+ in the solution is called a

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06-06-2018
Chemistry

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A chemical indicator that changes colors depending on the concentration of h+ in the solution is called a

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Dejanras Dejanras · Answer 1 · 2018-06-15T12:26:13+02:00

Answer is: acid-base indicator or pH indicators.

Acid-base indicators are usually weak acids or bases and they are chemical detectors for hydrogen or hydronium cations.
Example for acid-base indicator is phenolphthalein (molecular formula C₂₀H₁₄O₄). Phenolphthalein is colorless in acidic solutions and pink in basic solutions.
Another example is methyl orange. It is red colour in acidic solutions and yellow colour in basic solutions.