Question

Electron chemical equivalent of a substance is 0.0006, it's equivalent weight is?
A. 57.9
B. 28.95
C. 115.8
D. Cannot be calculated

Answer 1

Hint: Try to relate the electron chemical equivalent weight with the concept of Faraday. Electrochemical equivalence refers to the mass of the element which is transferred by a charge of 1 coulomb.

Complete answer:
An electrochemical equivalent (ECE) is the amount of a substance in grams produced or consumed by the passage of 1 coulomb of electricity in an electrochemical reaction.
A voltmeter is employed to live the electrochemical equivalent of a component. ECE is especially used for determining the kinetics of corrosion rates and to estimate the oxidizing power in specific environments.
Electrochemical equivalent is abbreviated as ${{E}_{g}}$ (grams per coulomb).
The faraday may be a dimensionless unit of electrical charge quantity, adequate approximately $6.02\times {{10}^{23}}$ electrical phenomenon carriers. this is often resembling one mole , also referred to as Avogadro's constant .
In the International System of Units of Units ( SI ), the coulomb (C) is the preferred unit of electrical charge quantity. it's resembling one ampere-second and represents approximately $6.24\times {{10}^{18}}$ charge carriers. To convert from coulombs to faradays, multiply by $1.04\times {{10}^{-5}}$ In order to convert from faradays to coulombs, we multiply it by $9.65\times {{10}^{4}}$.
So, we have
$e=0.006g/C$, and $e=\frac{E}{F}$, where F=faraday and E= equivalent weight
So,
$E=e\times F$
Taking F as 96500, we get
$E=0.0006\times 96500$
Which comes out to be approximately 57.9.

Hence, we get option A as our answer.

Note:
You should not get confused between the values of ‘E’ and ‘e’. The equivalent weight of an element is generally termed as the mass that is used to combine with or that displaces 1.008 gram of hydrogen /8.0 grams of oxygen/35.5 grams of chlorine.