Q.
Phenolphthalein cannot be used in the titration of
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a
HCI with NaOH
b
CH3COOH with NaOH
c
HCI with NH4OH
d
CH3COOH with NH4OH
answer is C.
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Detailed Solution
Since the base is weak it can’t react with phenolphthalein and form the colored form, which is mandatory for end point.
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