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The emf of the cells obtained by combini...

The emf of the cells obtained by combining zinc and copper electrodes of the Daniell cell with calomel electrodes are 1.083 volt and -0.018 volt respectively at `25^(@)C`. If the reduction potential of normal calomel electrode is + 0.28 volt, find the emf of the Daniell cell.

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For the cell Zn electrode || calomel electrode
`E_(cell)=` Oxid. Pot. Of Zn electrode + Red. Pot. Of calomel electrode So, oxid. Pot. Of Zn electrode `=1.083-0.28=0.803` volt
For the cell,
Cu electrode || Calomel electrode
`E_(cell)=` Oxid. pot. of Cu electrode + Red. pot. of calomel electrode So, oxid. pot. of Cu electrode=- 0.018-0.28=-0.298 volt
for the daniell cell,
Zn electrode||Cu electrode
`E_(cell)=` Oxid. pot. of Zn electrode + Red. pot. of copper electrode
`=0.803+0.298=1.101` volt
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