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प्रश्न
Chlorine gas was prepared using electrolysis of brine solution. Write the chemical equation to represent the change. Identify the other products formed in the process and give one application of each.
उत्तर
Any other relevant equation in the chain reaction.
\[\ce{2NaCl(aq) + 2H2O(l) -> 2NaOH(aq) + Cl2(g) + H2(g)}\]
OR
\[\ce{NaCl -> Na+ + Cl-}\]
\[\ce{2Cl- -> Cl2 + 2e- (At anode)}\]
\[\ce{H2O -> H+ + OH-}\]
\[\ce{2H+ + 2e -> H2 (At cathode)}\]
\[\ce{Na+ + OH- -> NaOH}\]
Sodium hydroxide/NaOH/Caustic soda:
- Degreasing of metals
- Preparation of soaps and detergents
- Papermaking
- Artificial fibres
Hydrogen:
- Fuels
- Margarine
- Manufacture of ammonia for fertilizers
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संबंधित प्रश्न
The electrolysis of an aqueous solution of sodium chloride gives us three products. Name them.
During the electrolysis of a saturated solution of sodium chloride, where is:
chlorine formed?
During the electrolysis of a saturated solution of sodium chloride, where is:
sodium hydroxide formed?
A student prepared 20% sodium hydroxide solution in a beaker containing water. The observations noted by him are given below.
I. Sodium hydroxide is in the form of pellets.
II. It dissolves in water readily.
III. The beaker appears cold when touched from outside.
IV. The red litmus paper turns blue when dipped into the solution.
The correct observations are:
(A) I, II, and III
(B) II, III and IV
(C) III, IV and I
(D) I, II and IV
Answer the following question:
List the important products of the Chlor-alkali process. Write one important use of each.
Sodium hydroxide is used ____________.
Sodium hydroxide turns phenolphthalein solution.
Sodium hydroxide is termed an alkali while Ferric hydroxide is not because ______.
The industrial process used for the manufacture of caustic soda involves electrolysis of an aqueous solution of compound 'X'. In this process, two gases 'Y' and 'Z' are liberated. 'Y' is liberated at cathode and 'Z', which is liberated at anode, on treatment with dry slaked lime forms a compound 'B'. Name X, Y, Z and B.
While electrolysing water before passing the current some drops of an acid are added. Why? Name the gases liberated at cathode and anode. Write the relationship between the volume of gas collected at anode and the volume of gas collected at cathode.
