Question

34. (5)

(i) Explain any two applications of pH in daily life

(ii)

(iii) Define chlor – alkali process.

OR

(i) A compound ‘x’ on heating with excess of conc. H2SO4 also react with Na metal to give

colorless gas ‘z’ Identify ‘x’ ‘y’ and ‘z’ and also write the equation for formation of ‘y’ and also

write the equation for formation of ‘y’ and also write the role of conc. H2SO4 in the reaction.

(ii) How washing soda is prepared from baking soda?

(iii) Mention any other use of washing soda.​

Answer 1

Answer:

1. pH plays a very important role in our everyday life. In our digestive system :Hydrochloric acid produced in our stomach helps the digestion of food without causing any harm to the stomach. But when the amount of the acid goes beyond a certain limit due to indigestion, pain and irritation are created in the stomach.

3The chloralkali process is an industrial process for the electrolysis of sodium chloride solutions. It is the technology used to produce chlorine and sodium hydroxide, which are commodity chemicals required by industry. 35 million tons of chlorine were prepared by this process in 1987.