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Having just done an experiment in class I think I can answer this. In a test tube collect some swimming pool water then add some bromthymol blue and phenolphthalein and using pH paper dip it in the solution to determine the pH.

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11y ago
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11y ago

The bromthymol blue solution is yellow in acidic waters and blue in basic waters; in a neutral water is practically colorless or pale blue-green.

See the link below for the preparation of the indicator solution.

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Q: How one might use bromthymol blue and phenolphthalein to test the ph of water in a swimming pool?
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What is the color of lime water when phenolphthalein is added into lime water?

The color is pink with phenolphthalein.


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Phenolphthalein dissolves in water to get a clear transparent solution.


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Yes, it is.


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