MHT CET · Chemistry · Electrochemistry

The SI unit of electrochemical equivalent is

A $J s^{- 1}$
B $K g C^{- 1}$
C $K g m s^{- 2}$
D $K g m^{- 1} s^{- 2}$

Verified Solution

Answer & Solution

Correct Answer

(B) $K g C^{- 1}$

Step-by-step Solution

Detailed explanation

The electrochemical equivalent of a substance is the mass liberated in electrolysis by 1 coulomb. It can be calculated by assuming by 1 coulomb Faraday’s second law and using the experimental fact that the equivalent weight in gams of all substances is liberate by 96500 C.
Electrochemical equivalent

= \frac{E q u i v a l e n t w e i g h t}{96500}

Gm per coulomb. Its unit is

k g C^{- 1} .

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Explore more questions on app

From MHT CET

Explore more questions on app