For some reactions the standard reduction potentials are given below : `Zn^(2+) + 2 e to Zn , " " E^(@) = -0.762 V` `Fe^(2+) + 2e to Fe , " " E^(@) =

Question

For some reactions the standard reduction potentials are given below : `Zn^(2+) + 2 e to Zn , " " E^(@) = -0.762 V` `Fe^(2+) + 2e to Fe , " " E^(@) =

For some reactions the standard reduction potentials are given below :
`Zn^(2+) + 2 e to Zn , " " E^(@) = -0.762 V`
`Fe^(2+) + 2e to Fe , " " E^(@) = -0.440 V`
`Cu^(2+) + 2e to Cu , " " E^(@) = + 0.345 V`
`Ag^(+) + e to Ag " " E^(@) = + 0.800V`
Which one of the following is most easily oxidised ?
A. Zn
B. Cu
C. Fe
D. Ag

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
Less the reduction potential or greater the oxidation potential , more easily the substance is reduced `E_(Zn)^(@) lt E_(Fe)^(@) lt E_(Cu)^(@) lt E_(Ag)^(@)` .

5 views Answered 2023-02-05 15:29