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monitta
2 years ago
5

When does phenolphthalein turn pink?

Chemistry
2 answers:
lesya692 [45]2 years ago
5 0
A.) <span>Phenolphthalein is colorless in an acid, but it turns bright pink in the presence of a base.

Hope I helped you!!</span>
Svetach [21]2 years ago
3 0

Answer is: a) in the presence of a base.

Phenolphthalein is colorless in acidic solutions and pink in basic solutions.

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).

When solution turns phenolphthalein pink, it means it is basic (pH>7).

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If a object has a mass of 10 kilograms, how much does it weigh in newtons?
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2 years ago
What is the difference between liquid nitrogen and nitrogen gas​
Studentka2010 [4]

Answer:

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Explanation:

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2 years ago
You are given a bottle of solid X and three aqueous solutions of X—one saturated, one unsaturated, and one supersaturated. How w
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5 0
2 years ago
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Hey,
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3 years ago
A rigid plastic container holds 1.00 l methane gas at 660 torr pressure when the temperature is 22.0 degrees Celsius. How much p
igor_vitrenko [27]
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3 years ago
Read 2 more answers
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