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Suppose a powerful battery is connected between a pair of inert graphite electrodes dipped into a pot of molten zinc chloride (see sketch at right).

Respuesta :

The electrode A is a cathode. This is because it is negatively charged electrode and it attracts cations, or we can say it is positively charged. 
The reaction occurs at the cathode
Zn2+ +2e⇒Zn
Anode reaction is 
2CL- ⇒CL2+2e-
The overall reaction will be Zncl2(l) which completely disassociates then it is zn∧2+(l)+2cl∧-(l). 

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