Please tell

Asked by  | 1st Dec, 2008, 10:36: PM

Expert Answer:

Metal M is sodium,Na.Electrolysis mehod is used for resuction of molten metal chloride by process of electrolysis.The process has been explained below:

The reactions at each electrode are called half equations.
The half equations are written so that the same number of electrons
occur in each equation.

2Na+  +  2e-       2Na (sodium metal at the (-)cathode).
2Cl-  -  2e-       Cl2 (chlorine gas at the (+)anode).

Sodium ions gain electrons (reduction) to form sodium atoms.
Chloride ions lose electrons (
oxidation) to form chlorine atoms.
The chlorine atoms combine to form
molecules of chlorine gas.

The overall reaction is

2Na+Cl-(l)           2Na(s)  +   Cl2(g)

Answered by  | 2nd Dec, 2008, 03:05: AM

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