The three cells with their \(E^\circ_{\text{(cell)}}\) values are given below:

Cells \(E^\circ_{\text{(cell)}}/V\)
(a) Fe|Fe2+||Fe3+|Fe 0.404
(b) Fe|Fe2+||Fe3+, Fe2+|Pt 1.211
(c) Fe|Fe3+||Fe3+, Fe2+|Pt 0.807
The standard Gibbs free energy change values for three cells are, respectively
(F represents the charge on 1 mole of electrons.)
 
1. -1.212 F, -1.211 F, -0.807 F
2. +2.424 F, +2.422 F, +2.421 F
3. -0.808 F, -2.422 F, -2.421 F
4. -2.424 F, -2.422 F, -2.421 F
Subtopic:  Faraday’s Law of Electrolysis |
 55%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The number of Faradays (F) required to produce 20 g of calcium from molten CaCl2 (Atomic mass of Ca=40 g mol-1) is:

1. 2

2. 3

3. 4

4. 1

Subtopic:  Faraday’s Law of Electrolysis |
 67%
From NCERT
NEET - 2020
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh