1.

Which is the best choice for weak base-strong acid titration

Answer»

methyl RED
Litmus
Phonol red
Phenolphthalein

Solution :pH curve of strong acid with a weak BASE is vertical over the pH range of 4 to 7.

The indicator that shows COLOUR change within this range is suitable. Methyl red (pH range 4.4-6.5) is the best CHOICE.


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