Common salt is a very important chemical compound for our daily life. It's chemical name is sodium chloride…
Common salt is a very important chemical compound for our daily life. It's chemical name is sodium chloride and it is used as a raw material in the manufacture of caustic soda, washing soda, baking soda etc. It is also used in the preservation of pickles, butter, meat etc.
(i) Name the acid and the base from which common salt can be obtained.
(ii) State the nature (acidic/basic/neutral) of sodium chloride. Give reason for the justification for your answer.
(iii) (A) What happens when electric current is passed through an aqueous solution of sodium chloride (called brine)? Name the products obtained along with the corresponding places in the electrolytic cell where each of these products is obtained.
Solution
(i) Hydrochloric acid / HCl and Sodium hydroxide / NaOH
(ii)
Neutral
as it is a salt of strong acid and strong base
(iii) (A)
Aqueous solution of sodium chloride(brine) decomposes (electrolysed) and produces:
NaOH solution near cathode
Cl2 at anode
H2 at cathode