• Our stomach has an acidic pH due to the secretion of HCl that aids in digestion.
  • The HCl helps in destroying bacteria , as well as other harmful species in the stomach. 
  • HCl converts an inactive enzyme called pepsinogen into pepsin to breakdown proteins in the food we eat.
  • HCl acts as a shield, apart from mucus, to prevent pepsin from digesting the entire stomach.
  • Indigestion which also leads to excess acid production in the stomach makes us feel uncomfortable. This is called acidity .
  • To neutralise the effect of the excess acid like Magnesium Hydroxide (Mg(OH) 2 ) also called Milk of Magnesia , we use antacids which are basic in nature.

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  1. Class 10
  2. Chapter 2 Class 10 - Acids, Bases and Salts (Term 1)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo