Answer the following:
(i) Why is sodium hydrogen carbonate an essential ingredient in most antacids?
(ii) When electricity is passed through an aqueous solution of sodium chloride, three products are obtained. Why is the process called chlor-alkali process?
Answer the following: (i) Why is sodium hydrogen carbonate an essential ingredient in most antacids?
(i) Sodium hydrogen carbonate is an essential ingredient in most antacids because it is slightly alkaline in nature.
(ii) The process is called chlor-alkali process. Here,chlor stands for chlorine and alkali for sodium hydroxide. The amount of hydrogen obtained is very less, thus, it is not given in the name of the process.