The most suitable indicator to be used when reacting ethanedioic acid with potassium hydroxide is 

PerfectEmerole

5 months ago

The answer is option A
Titration of strong acid and strong base any indicator can be used
Titration of weak acid and strong base phenolphthalein is used
Titration of strong acid and weak base methyl orange is used
Titration of weak acid and weak base no suitable indicator is used
In the question. Ethanoic acid is a weak acid while potassium hydroxide is a strong base therefore in this experiment phenolphthalein can be used.

chinyerevictory

5 months ago

The right answer is A
For weak (oxalic or ehanedioic) and strong (potassium hydroxide), use Phenolphthalein

MedicASH

2 months ago

Use SAM WAP

SAM strong acid use methylorange
WAP weak acid use phenolphthalein

NOTE THAT IF ACID IS STRONG BASE WILL BE WEAK AND VICE VERSA

SOCHUKWU2009

4 months ago

I didn't use the same method but yes the answer is a