Q. 15

Calculate <span l

Answer :

Eocell,also called as cell voltage or cell potential,is the electromotive force between two half-cells.

Eocellcan be calculated as follows:

Eocell= -0.44-(-0.74) = 0.30 V

In this above reaction, six electrons are transferred from Cr to Fe

From the nernst equation at 298K,

Ecell= Eocelllog (here n is no. of electrons participated in given reaction)

Ecell= Eocell- log

Ecell= 0.30 + 0.01 = 0.31V

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Consider Fig. 3.2Chemistry - Exemplar

Consider Fig. 3.2Chemistry - Exemplar

Match the items oChemistry - Exemplar