BIOCHEMISTRY
PH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a base
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an acid
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neutral
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not enough information
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Detailed explanation-1: -Phenolphthalein changes to pink when added to a basic solution. It does not change colour in either an acidic solution or a neutral solution. So, c is the correct option.
Detailed explanation-2: -Phenolphthalein do not change its colour in acidic solution.
Detailed explanation-3: -Is phenolphthalein acidic or basic? Phenolphthalein, an organic compound with the chemical formula C20H14O4, is a weak acid which can be used as an indicator for acid-base titrations. In acidic solutions, the compound is colourless.
Detailed explanation-4: -Nothing will happen beacause: Phenolphthalein is an acid/base indicator. It is colorless when it is an acid and pink when it is a base.
Detailed explanation-5: -In Acidic solution phenolphthalein is colourless but in basic it gives pink colour . They both are used as a pH indicator.