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Which of the following is an acid-base indicator? A) hydrochloric acid B)sodium hydroxide C)water D)phenolphthalein
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Which of the following is an acid-base indicator? A) hydrochloric acid B)sodium hydroxide C)water D)phenolphthalein

User Schadenn
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D the answer is phenolphthalein
User Prakash Raj
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Answer:

D)phenolphthalein

Step-by-step explanation:

Phenolphthalein is an acid base indicator. It is used in acid base titrations. It is colorless in acidic solution and turns pink in basic solutions. Between 8-10 pH range phenolphthalein is pink and at pH below 8 it is colorless.

Hydrochloric acid is an acid, sodium hydroxide is a base and water is neutral.

User Keheliya
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