The standard redox potentials `E^@` of the following systems are `{:("System",E^@("volts")),((i)MnO_4^(-)+BH^(+)+5e^(-)toMn^(2+)+4H_2O,1.51),((ii)Sr^(

Question

The standard redox potentials `E^@` of the following systems are `{:("System",E^@("volts")),((i)MnO_4^(-)+BH^(+)+5e^(-)toMn^(2+)+4H_2O,1.51),((ii)Sr^(

The standard redox potentials `E^@` of the following systems are `{:("System",E^@("volts")),((i)MnO_4^(-)+BH^(+)+5e^(-)toMn^(2+)+4H_2O,1.51),((ii)Sr^(2+)toSn^(4+)+2e^(-),-0.15),((iii)Cr_2O_7^(2-)+14H^(+)+6e^(-),1.33),((iv)Ce^(3+)toCe^(4+)+e^(-),-1.61):}`
The oxidising power of the various species are related as
A. `Cr_2O_7^(2-) gt MnO_4^(-)`
B. `Ce^(4+) gt Sn^(4+)`
C. `Ce^(4+) gt MnO_4`
D. MnO_4^(-) gt Sn^(4+)`

Monjur Alahi

4 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 - B,C,D
`S.R.P uarr O.A uarr " " S.R.P=-S.O.P`
`E_(Ce^(+4)|Ce^(+3))^@gtE_(MnO_4^(-)|Mn^(+2))^@gtE_(Cr_2O_7^(-2)|Cr^(+3))^@gtE_(Sn^(+4)|Sn^(+2))^@`
`1. 61` `1.51` `1.33` `0.15`

4 views Answered 2023-02-05 15:29