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Representation of Cell

What is the e...

Question

What is the electrochemical equivalent of cu in the reaction

Cu⁺²+2e^---> Cu

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Solution

Electrochemical equivalent or ECE of an element is the mass of that element liberated or deposited at an electrode when one ampere of electricity is passed through an electrolytic cell for one second and is denoted by “Z”.

We know, Faraday’s first law of electrolysis states that “the mass of an element(W) liberated or deposited is proportional to the quantity of electric charge(Q) passed through the electrolyte during electrolysis”.

i.e. W∝Q

i.e.W∝It [Since q=it]

=>W=ZIt ,

Z= W/It

Here I and t are not given hence we cannot find the Electrochemical Equivalent

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