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23 February, 11:12

Which indicator would show a pH change from 6 to 7?

Red litmus indicator

Methyl red indicator

Phenol red indicator

Blue litmus indicator

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Answers (1)
  1. 23 February, 11:27
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    Phenol red indicator.

    Explanation:

    Phenol red indicator is an organic dye which works as an indicator in the pH range (6.8 - 8.4) for acid-base reactions.

    The color in acidic solutions is yellow and in basic solution is red.
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