Case : 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 1 litre of sea water is evaporated

What is the pH of the acid which is used in the formation of common salt ?

Options

A. Betweem 1 to 3
B. Between 6 to 8
C. Between 8 to 10
D. Between 11 to 13

Answer

A

Explanation

Common salt or NaCl is formed from hydrochloric acid, HCl and sodium hydroxide, NaOH.
`HCl_((aq))+NaOH_((aq))toNaCl_((aq))+H_(2)O_((l))`
As HCl is a strong acid its pH will be between 1 to 3.