NTA Abhyas NEET2020ChemistryElectrochemistryPractice
Consider the following recuction processes Z n 2 + + 2 e - → Z n ( s ) ; E ° = - 0.76 V C a 2 + + 2 e - → C a ( s ) ; E ° = - 2.87 V M g 2 + + 2 e - → M g ( s ) ; E ° = - 2.36 V N i 2 + + 2 e - → N i ( s ) ; E ° = - 0.25 V The reduction power of the metals increases in the order
Options
- ACa < Zn < Mg < Ni
- BNi < Zn < Mg < Ca
- CZn > Mg < Ni < Ca
- DCa < Mg < Zn < Ni
Correct answer
B. Ni < Zn < Mg < Ca
Step-by-step solution
Reducing power ∝ Tendency to undergo oxidation ∝ 1 reduction   potential   values so, reducing power decreases as Ca > Mg > Zn > Ni