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?
Explain why :
Mercury loses its meniscus in contact with ozone.
When ozone is passed through mercury, it loses its meniscus and sticks to the glass due to formation mercurous oxide.