(a) A steady current of 2 amperes was passed through two electrolytic cells X and Y connected in
Channel: Doubtnut
Date: 2020-01-03

(a) A steady current of 2 amperes was passed through two electrolytic cells X and Y connected in series containing electrolytes `FeSO_(4)` and `ZnSO_(4)` until 2.8 g of Fe deposited at the cathode of cell X. How long did the current flow ? Calculate the mass of Zn deposited at the cathode of cell Y (Molar mass : Fe= 56 g `mol^(-1)` Zn-65.3g `mol^(-1)`, 1F -96500 C `mol^(-1)`) (b) In the plot of molar conductivity `(wedge_(m))` vs Square root of concentration `(c^(1//2))`, following curves are obtained for two electrolytes. A and B: Answer the following : (i) Predict the nature of electrolytes A and B. (ii) What happens on extrapolation of `wedge_(m)` to concentration approaching zero for electrolytes A and B ?