Question

what would happen if methyl orange is mixed in phenolphthalein​

Answer 1

Answer:

Explanation:

It so happens that the phenolphthalein has finished its colour change at exactly the pH of the equivalence point of the first half of the reaction in which sodium hydrogencarbonate is produced. The methyl orange changes colour at exactly the pH of the equivalence point of the second stage of the reaction

Answer 2

Answer:

There is no colour change because phenolphtalein natural colour is orange.

Hope it helps