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  • Sodium chloride can beOption: 1 used as Table saltOption: 2 used for preparation of Na

Sodium chloride can be

Option: 1

used as Table salt


Option: 2

used for preparation of Na2O2


Option: 3

used for the preparation of NaOH & Na2CO3


Option: 4

All of these


Answers (1)

best_answer

NaCl can be used as a Table Salt

Preparation of NaOH from NaCl

NaCl(aq){\rightarrow}Na^+ +Cl^-

\\ \text{At anode: }2Cl^-\rightarrow Cl_2+2e^-\\ \text{At cathode: }2H_2O+2e^-\rightleftharpoons H_2+2OH^-

Na^+ + OH^-\rightarrow NaOH

Preparation of Na2O2

Sodium metal can be extracted from NaCl by Down's process and allowed to react with excess oxygen to obtain Sodium Peroxide

2Na+O_2\rightarrow Na_2O_2

Preparation of Na2CO3

\\NaCl+NH_3 + CO_2+H_2O\longrightarrow NaHCO_3+NH_4Cl\\ \\2NaHCO_3\overset{\Delta}{\longrightarrow}Na_2CO_3+H_2O+CO_2

Hence, all given statements are correct.

Therefore, option (4) is correct.

Posted by

manish

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