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Salt bridge contains :-

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Important Questions on Electrochemistry

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The emf of the cell, NiNi2+1.0 MAg+1.0 MAg  [E°  for Ni2+/Ni=-0.25 volt, E° for Ag+/Ag=0.80 volt] is given by
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 for F2+2e=2F- is 2·8 V,  for 12F2+e=F- is:

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Consider the cell potentials EMg2+Mg=-2.37 V and EFe3+Fe=-0.04 V. The best reducing agent would be
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If a spoon of copper metal is placed in a solution of ferrous sulphate. 
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The position of some metals in the electrochemical series in decreasing electropositive character is given as Mg>Al>Zn>Cu>Ag. What will happen if a copper spoon is used to stir a solution of aluminium nitrate?
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Electrode potential data are given below.

Fe3+aqueous+e-Fe2+aq; E=+0.77

Al3+aqueous+3e-Als; E=-1.66 V

Br2aqueous+2e-2Br-aqueous; E=+1.08 V

Based one the data given above, reducing power of Fe2+, Al and Br- will increase in the order:

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KCl can be used in salt bridge as the electrolyte in which of the following cells?
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Consider the following E° values
EFe3+/Fe2+=0.77V,  E°Sn2+/Sn=-0.14V

Under standard conditions, the potential for the reaction Sn(s)+2Fe3+(aq)2Fe2+(aq)+Sn2+(aq) is