Concept:Acidity occurs due to excess hydrochloric acid in the stomach, and antacids are mild bases that neutralise this excess acid through a neutralisation reaction.
Explanation:The stomach naturally secretes
HCl to help in digestion.
During indigestion, excess
HCl causes pain and irritation, a condition commonly called acidity.
Antacids are mild bases used to relieve this pain.
They react with the excess acid and neutralise it.
Magnesium hydroxide,
Mg(OH)2, also known as milk of magnesia, is a widely used antacid.
It reacts with
HCl to form salt and water, reducing acidity.
The reaction is:
Mg(OH)2+2HCl→MgCl2+2H2OLemon juice and vinegar are acidic in nature, so they would increase the acid level in the stomach.
An
HCl solution is a strong acid and would be harmful to consume.
Therefore, antacids are the correct choice for neutralising excess stomach acidity.
Answer:Option B: Antacids like
Mg(OH)2.