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Sulphate Salts of Copper and Calcium

Ram was given...

Question

Ram was given a jar filled with distilled water. What would be his observation when he adds a drop of phenolphthalein in this jar?

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Solution

Phenolphthalein is a laboratory indicator. It remains colourless when added to an acidic or a neutral substance. But it turns pink when added to a basic substance. Since distilled water is a neutral compound, it remains colourless when phenolphthalein is added to it.

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