Question

methyl orange is not a suitable indicator in the titration of a weak acid against a strong base. why?​

Answer 1

Answer:

Weak Acid against Strong Base:

This is due to the hydrolysis of sodium acetate formed. Hence phenolphthalein is a suitable indicator as its pH range is 8-9.8. However, methyl orange is not suitable as its pH range is 3.1 to 4.5

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Answer 2

Answer:

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Weak Acid against Strong Base:

This is due to the hydrolysis of sodium acetate formed. Hence phenolphthalein is a suitable indicator as its pH range is 8-9.8. However, methyl orange is not suitable as its pH range is 3.1 to 4.5.