First slide

Buffer Capacity

Question

Statement I : Methyl orange is not a suitable indicator if the acid is a weak acid like acetic acid.
Statement II : Methyl orange is a weak base.

Easy

A

Statement I and II are correct
B

Statement I is correct and Statement II is incorrect
C

Statement - I is incorrect and Statement II is correct
D

Both statement - I and statement - II are False

Solution

The color change range for methyl orange is 3.1 to 4.4. The P^H of an acetic acid solution will be greater than 4.4.Moreover, Methyl orange is a weak base and so it will react with acetic acid and the purpose of the indicator will be defeated.

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