1.

Which of the given method produce Cl_(2)

Answer»

Electrolysis of brine
Deacons process
Heating `MnO_(2)` with CON HCl
Heating KCl with Con `H_(2)SO_(4)`

SOLUTION :(a) Electrolysis of Brine `-Cl_(2)` liberated at anode.
`2Cl^(-) rarr Cl_(2) + 2e^(-)` ( at anode) , `2H^(+) + 2e^(-) rarr H_(2)` ( at cathode)
(b) Deacon process `: 4HCL + O_(2) underset( 450^(@)C)overset( CaCl_(2))(rarr) 2Cl_(2) + 2H_(2)O`
(c ) `MnO_(2) + 4HCl ("conc.")rarr MnCl_(2) + Cl_(2) + 2H_(2)O`


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