1.

The most suitable indicator for the titration of HCOOH against NaOH is

Answer»

METHYL orange
phenolphthalein
thymol phthalein
Both (b) and (C)

SOLUTION :HCOOH is a weak acid and NAOH is a strong BASE, therefore, both, phenolphathalein and thymol phthalein can be used as indicator.


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