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Class 11 NEET Chemistry Equilibrium Questions Part 2
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Question : 3
Total: 24
Which indicator is used in the titration of sodium hydroxide against oxalic acid and what is the colour change at the end point?
[NEET 2024 Re]
Phenolphthalein, pink to yellow
Alkaline KMnO4, colourless to pink
Phenolphthalein, colourless to pink
Methyl orange, yellow to pinkish red colour
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Solution:
For weak acid and strong base titration, phenolphthalein is used as indicator. In acidic medium phenolphthalein is colourless while in alkaline medium it is pink in colour.
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