pls answer the question number 30 with all the parts.
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Answer:
When electricity is passed through an aqueous solution of sodium chloride . (called brine), it decomposes to form sodium hydroxide. The process is called chlor-alkali process - because of the products fromed chlor for chlorine and alkali for sodium hydroxide.Sodium hydroxide solution is formed near the cathode
ii)The acid used is hydrochloric acid and the base used is Ammonium hydroxide. Now, HCl is a strong acid and NH4OH is a weak base. Thus, NH4Cl is prepared from a strong acid and weak base! Therefore, the salt will be a little acidic in nature.
iii)#Bleaching powder used as an oxidizing agent and used in cleaning of clothes
#Plaster of Paris is a building material that is used as a protective coating on walls and ceilings. It is also used as a moulding and casting agent for decorative elements. It is used to give aesthetic finishing touches to the buildings.