Question

Relation between chemical equivalent and electrochemical equivalent

Answer 1

Chemical equivalent is the weight in grams of a substance which displaces or combines with one gram of hydrogen. Chemical equivalent can be found by dividing the formula weight by its valence.

While the electrochemical equivalent of a substance is a simple ratio of its chemical equivalent weight to a faraday.

ECE = E/F    E is Chemical equivalent weight, F is Faraday number.

In other words, electrochemical equivalent or Eq of a chemical element is the mass of that element in grams which is transported by 1 coulomb of electricity. Eq is measured with a voltameter.