Calculate the emf and △Go for the cell reaction at 25oC:
Zn(s)|Zn2+(aq) ||Cd2+ (aq)| Cd(s)
Zn2+(aq) = (0.1 M)
Cd2+ (aq) = (0.01 m)
Given Eo Zn2+/Zn = -0.763 and Eo Cd2+/Cd = -0.403 V
The specific conductivity of a solution containing 5 g of anhydrous BaCl2 (mol. wt = 208) in 1000 cm3 of a solution is found to be 0.0058 ohm–1cm–1. Calculate the molar and equivalent conductivity of the solution.
What is an electrochemical series? How is it useful in predicting whether a metal can liberate hydrogen from acid or not?
The arrangement of elements in order of increasing reduction potential values is called electrochemical series.
Only the metals can liberate hydrogen from the acid which has negative values of reduction potential i.e -E0 values.