Topic Question Set
Q 1
:
Which indicator is used in the titration of sodium hydroxide against oxalic acid and what is the colour change at the end point? [2024]
Phenolphthalein, pink to yellow
Alkaline , colourless to pink
Phenolphthalein, colourless to pink
Methyl orange, yellow to pinkish red colour
(3)
Phenolphthalein is used as an indicator in the titration of sodium hydroxide (strong base) against oxalic acid (weak acid), which changes the colour from colourless to pink.
