<u>Answer:</u> The ratio of in an aqueous solution is
<u>Explanation:</u>
The substance having highest positive potential will always get reduced and will undergo reduction react.
<u>Oxidation half reaction:</u>
<u>Reduction half reaction:</u> ( × 2)
<u>Net cell reaction:</u>
Substance getting oxidized always act as anode and the one getting reduced always act as cathode.
To calculate the of the reaction, we use the equation:
To calculate the EMF of the cell, we use the Nernst equation, which is:
Concentration of pure solids and liquids are taken as 1 in the ratio
where,
= electrode potential of the cell = +0.80 V
= standard electrode potential of the cell = -0.21 V
n = number of electrons exchanged = 2
= Ratio of the concentration
Putting values in above equation, we get:
Hence, the ratio of in an aqueous solution is