which solution shows pink colour when phenolphthalein indicator is added?
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Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions.
Explanation:
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Answer:
CaO gives pink colour with phenolphthalein indicator in aqueous solution.
An aqueous solution of CaO is alkaline in nature due to hydrolysis.
The phenolphthalein indicator is colourless in acidic medium and pink coloured in alkaline medium.
The aqueous solutions of N2O and NO are neutral.
The aqueous solution of CO2 is acidic in nature.
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