Case Base Question
The Salt Story
From: The New Indian Express 9 March 2021
The salt pans in Marakkanam, a port town about 120 km from Chennai are the third largest producer of salt in Tamil Nadu. Separation of salt from water is a laborious process and the salt obtained is used as raw materials for manufacture of various sodium compounds. One such compound is Sodium hydrogen carbonate, used in baking, as an antacid and in soda acid fire extinguishers. The table shows the mass of various compounds obtained when 1litre of sea water is evaporated
Which compound in the table reacts with acids to release carbon dioxide?
(A) NaCl
(B) CaSO 4
(C) CaCO 3
(D) MgSO 4
Answer -
We know that
- Acids react with Metal Carbonates and Hydrogen Carbonates to form salt, carbon dioxide and water.
- Hence from the options, Acid will react with Calcium Carbonate (CaCO 3 ) to release Carbon Dioxide
An example of the reaction is
Calcium carbonate reacts with hydrochloric acid to form carbon dioxide gas.
So, the correct answer is (c)
