Question

pH has a great importance in our daily life” explain by giving three examples.

Answer 1

1) pH in our digestive system:
               Our stomach produces hydrochloric acid.This dilute hydrochloric acid helps in digesting our food without harming the stomach.Sometimes excess of acid is produced in the stomach.The excess acid in the stomach causes indigestion which produces pain and irritation.In order to cure indigestion,we can take bases called antacids.
2) pH concentration level in tooth decay:
             When we eat food containing sugar,then the bacteria present in our mouth break down the sugar to form acids.This acid lowers the pH in the mouth.Tooth decay starts when the pH of acid formed in the mouth falls below 5.5.This is because then the acid becomes strong enough to attack the enamel of our teeth and corrode it.