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Phenol red is a common ph indicator. you add phenol red to an unknown substance and it turns yellow. what does this indicate about the ph of the substance?

Phenol red is a common ph indicator. you add phenol red to an unknown substance and it turns yellow. what does this indicate about the ph of the substance?
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Phenol red is a common ph indicator. you add phenol red to an unknown substance and it turns yellow. what does this indicate about the ph of the substance?

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User Laokoon
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it's ph is lower than 7
answered
User Guillaume Vincent
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