What is the common name of sodium hydrogencarbonate?(b) What happens when a solution of sodium hydrogencarbonate is heated? Write the equation of the reaction involved. Explain why, sodium hydrogencarbonate is used as an antacid.

• Baking soda is the common name of sodium hydrogencarbonate
• When a solution of sodium hydrogencarbonate is heated, then it decomposes to give sodium carbonate with an evolution of carbon dioxide gas

2NaHCO3 → Na2CO3 + CO2 + H2O

• Sodium hydrogencarbonate is used as an antacid because the function of antacid is neutralizing the excess acid present in the stomach and helps to get relief from indigestion