Question

why the medium does become acidic in mouth ?

Answer 1

Answer:

Reason-;

The medium become acidic in mouth because of the food taken by us contains many pigment of acid like if we eat lemon it contains citric acid which make the medium of mouth acidic..

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Answer 2

The medium becomes acidic in mouth because of the acidic pigment that is in the medium.
It reacts with our saliva and hence gives a citric taste in our mouth.