A) methyl orange
B) phenolphthalein
C) methyl red
D) All can be used
Correct Answer: B
Solution :
In acidic medium phenolphthalein is colorless and in alkaline medium it is pink. Therefore, in the titration of strong base\[(KOH)\,\,vs\]weak acid (oxalic acid) phenolphthalein is used.You need to login to perform this action.
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