Two half cell reactions of an electrochemical cell are given below: MnO (aq ) +8H+ (aq ) + 5e Mn2+ - Chemistry - Electrochemistry

Question

Two half cell reactions of an electrochemical cell are given
below:
MnO (aq ) +8H+ (aq ) + 5e Mn2+ (aq) + 4H2 O( l), E 1 51V Sn 2+(aq)
+Sn 4+(aq) + 2e , E0 =0 15 VConstruct the redox equation from the
two half cell reactions and predict if this reaction favours
formation of reactants or product shown in the equation

Anuradha Puri · Accepted Answer

<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/images/merit(121)%20bmp"
style="width: 580px; height: 80px;">
Ecell0 = Ered0    + Eoxi0           = 0
15 + 0
15           = 0
30 V

Since, Ecell0 is positive, the reaction will take place in forward
direction Thus, the reaction favours formation of products