Question:
Which indicator is used in the titration of sodium hydroxide against oxalic acid and what is the colour change at the end point?
Which indicator is used in the titration of sodium hydroxide against oxalic acid and what is the colour change at the end point?
Updated On: Jan 13, 2026
- Phenolphthalein, pink to yellow
- Alkaline KMnO4, colourless to pink
- Phenolphthalein, colourless to pink
- Methyl orange, yellow to pinkish red colour
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The Correct Option is C
Solution and Explanation
Phenolphthalein is a suitable indicator for the titration of a strong base (sodium hydroxide) against a weak acid (oxalic acid). The end point is indicated by a colour change from colourless in acidic solution to pink in basic solution.
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