What are electrodes ?

The quantity of electricity needed to liberate 0.1 gram equivalent of an element at the electrode is :

Calculate the electrode potential developed when a silver electrode in dipped in 0.025 M silver nitrate solution at 289K.

The e.m.f. of a cell is 1.3 V. The positive electrode has a potential of 0.5 V. The potential of negative electrode is :

Two platinum electrodes were immersed in a solution of cupric sulphate and electric current passed through the solution. After some time it was found that the colour of copper sulphate disappeared with evolution of gas at the electrode. The colourless solution contains

Electrochemical equivalent of a substance is equal to its quantity liberated at electrode on passing electricity equal to