Why is CdSO4.8/3H2o solidadded to the cell?
INDRAVATH BHASHA , 11 Years ago
Grade
Physical Chemistry> electrochemistry...
1 Answers
Sunil Kumar FP
Last Activity: 10 Years ago
This is weston standard cadmium cell.
When the cell operates the following reaction occurs at the electrode
at negative electrode
Cd(s) ---Cd+2 +2e-
at positive electrode
Hg2SO4 +2e- ----->2Hg +SO4 ^2-
Both the electrode are sprinkled with some crystals of solid CdSO4.8/3H2O
CdSO4.8/3H2o solid added to the cell is to keep the electrolyte saturated at all temperature.
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