SATHEE: Analytical Chemistry Question 57

Analytical Chemistry Question 57

Question: Phenolphthalein is not a good indicator for titrating

[NCERT 1977]

Options:

A) $ NaOH $ against oxalic acid

B) Ferrous sulphate against $ KMnO_4 $

C) $ NaOH $ against $ HCl $

D) $ NaOH $ against $ H_2SO_4 $

Show Answer

Answer:

Correct Answer: B

Solution:

Phenolphthalein is an indicator for strong base and weak acid, but $ KMnO_4 $ oxidises it.

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Analytical Chemistry Question 57

Question: Phenolphthalein is not a good indicator for titrating

Options:

Answer:

Solution:

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