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Question
In the acid-base titration, like NaOH vs HCl , which preferable internal indicator mostly used ?
In the acid-base titration, like NaOH vs HCl , which preferable internal indicator mostly used ?
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Solution
The correct option is C Phenolphthalein
Phenolphthalein
is often used as an indicator in acid–base titrations. For this application, it
turns colourless in acidic solutions and pink in basic solutions.
Changing of colour of Phenolphthalein from pink to colourless indicates end of titration and hence, it is preferable internal indicator.
Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colourless in acidic solutions and pink in basic solutions.
Changing of colour of Phenolphthalein from pink to colourless indicates end of titration and hence, it is preferable internal indicator.
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