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Phenolphthalein is pink and methyl orange is yellow in a solution. What is the nature of the solution?

Answer and explanation

Correct answer: Basic

Indicator colour ranges provide the governing evidence. Phenolphthalein is colourless in acidic or neutral conditions but becomes pink in a basic solution. Methyl orange is red in acidic medium and yellow in neutral to alkaline medium. Since both observed colours are consistent with a basic medium, the solution is classified as basic. A neutral solution would not make phenolphthalein pink, so option B is the unambiguous answer.

Related tags

IndicatorsBasic SolutionPhenolphthaleinAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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