1.

The standard potential at 25^(@)C for the following half reaction are given against them Zn^(2+)+2etoZn,E^(@)=-0.762V Mg^(2+)+2etoMg,E^(@)=-2.37V When zinc dust is added to the solution of MgCl_(2)

Answer»

`ZnCl_(2)` is formed
Zinc DISSOLVES in the solution
No reaction takes place
Mg is precipitated

Solution :
this type of reaction does not OCCUR because
`Mg^(2+)E^(o)=-2.37V` while `ZN^(2+)E^(o)=-0.76V`.


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