Using these metal ion/metal standard reduction potentials calculate cell potential for Cu2+(aq) + Cd(s) →Cd2+(aq)+ Cu(s) Cu2+(aq)|Cu(s) + 0.34 VNi2+(aq)|Ni(s) -0.25 Cd2+(aq)/Cd(s) -0.4V

Solution :

Cd(s) ---------------------->   (aq) + 2      ,      =   0.34 v

 (aq)  +   2  ------------> Cu (s)             ,      =  -0.04 v

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Cd(s)  +    (aq)  ------------->   (aq)  +  Cu (s)   ,        =  0.30 v  

The cell potential is defined as the measure of  between the of an electrochemical cell.  

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."