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Question
Which of the following is a common acid base indicator?
Which of the following is a common acid base indicator?
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Solution
The correct option is D All of the above
Indicators are compounds that help us to identify whether the given compound is acidic, basic or neutral by themselves undergoing a colour change.
The commonly used indicators are methyl orange, litmus solution, phenolphthalein.
Methyl orange in an acidic medium turns red and in basic medium it turns yellow.
Litmus solution turns red in acidic medium and blue in basic medium.
Phenolphthalein is colourless in acidic medium but changes it's colour to pink in basic medium.
Since, all these indicators are commonly used, the correct answer is option (D).
Indicators are compounds that help us to identify whether the given compound is acidic, basic or neutral by themselves undergoing a colour change.
The commonly used indicators are methyl orange, litmus solution, phenolphthalein.
Methyl orange in an acidic medium turns red and in basic medium it turns yellow.
Litmus solution turns red in acidic medium and blue in basic medium.
Phenolphthalein is colourless in acidic medium but changes it's colour to pink in basic medium.
Since, all these indicators are commonly used, the correct answer is option (D).
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