Alberta Free Tutoring And Homework Help For Chemistry 30

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How do i write the cell notation for a galvanic cell consiting of an Al electrode place in a 1.0M Al(NO)3(aq) solution and a Ag electrode placed in a 1.0M AgNO3(aq) solution. Write the half-reactions and the net ionic equation for the cell. Calculate the standard cell potential.

6 years ago

Answered By Naim S

Oxidation half reaction :    Al(s) $\rightarrow$ Al3+(aq) + 3e-

Reduction half reaction :   Ag1+(aq)+ 1e-$\rightarrow$ Ag(s)

The over all net ionic redox reaction would be  

Al(s) + 3 Ag1+(aq) $\rightarrow$ Al3+(aq)+3 Ag(s)   Line notation : Al/Al3+//Ag1+/Ag 

Eocell=Eo (ox) + Eo (red)= Eo (Al/Al3+) +Eo (Ag1+/Ag) = 1.66 + 0.8 = 2.46 V

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