InterviewSolution
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InterviewSolution
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Three electrolytic cell A, B and C are connected in series that consist of concentrated aqueous solution of sodium chloride (brine solution), fused zinc sulphate and aqueous silver nitrate solution . If 1.4l of chlorine is produced of all gaseous products liberated in B and C at their respective electrodes at STP and the charge required for the deposition. |
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Answer» Solution :`2Cl^(-) rarr Cl_(2) + 2e^(-)` `:.` 11.2 L of chlorine is liberated by passing 96.500 C of electricity 11.2 L of `Cl_(2)` is produced by 96,500 C 1.4 L of `Cl_(2)` is produced by ? `= (1.4 xx 96500)/(11.2) = 12062.5 C` of charge is required ELECTROLYTIC CELL A (aqueous NaCl) `2H^(+) + 2e^(-) rarr H_(2)` `2Cl rarr Cl_(2) + 2e^(-)` Cathodic product is `H_(2)` and ANODIC product is `Cl_(2)` 11.2 1 L of `H_(2)` is produced by 96,500 C? is produced by 12,062.5 C `= (12062.5 xx 11.2)/(96,500) = 1.4 L` Electrolytic cell B (fused `ZnSO_(4)`) Cathode : Zn Anode : `SO_(4)^(2-) rarr SO_(2) + O_(2) + 2e^(-)` `2 xx 96,500 C` gives 22.4 L of `SO_(2)` and 22.4 L of `O_(2)` at STP 12,062.5 C gives ? of `SO_(2)` and of ? of `O_(2)` at SPT `= (12062.5)/(2 xx 96,500) L " of " SO_(2)` and `(22.4 xx 12.62.5)/(2xx 96,500) L " of " O_(2)` `= 1.4 L " of " SO_(2)` and 1.4 L of `O_(2)` `V_(SO_(2)) + V_(O_(2)) = 2.8 L` Electrolytic cell C (Aq. `AgNO_(3)`) Cathode : Ag, Anode: `O_(2)` `4OH^(-) rarr 2H_(2)O + O_(2) + 4e^(-)` `4 xx 96,500 C` gives 22.4 L of `O_(2)` at STP, therefore, 2,062.5 C gives ? at STP `= (12062.5 xx 22.4)/(4xx 96,500) = 0.7 L " of " O_(2)` |
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