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E^(@) for Mg^(2+)//Mg=-2.37v,Zn^(2+)//Zn...

`E^(@)` for `Mg^(2+)//Mg=-2.37v,Zn^(2+)//Zn=-0.76vandFe^(2+)//Fe=-0.44v` which statement is correct ?

A

Zn reduces `Fe^(2+)`

B

Zn reduced `Mg^(2+)`

C

Mg oxidises Fe

D

Zn oxidises Fe

Text Solution

Verified by Experts

The correct Answer is:
A
Higher the - ve `E_("R.P")^(@)` better reducing agent
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CENGAGE CHEMISTRY-ELECTROCHEMISTRY -MULTIPLE CHOICE QUESTIONS WITH ONE OR MORE THAN ONE CORRECT ANSWER
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  3. For the cell reaction Cu(s)+Cl(2)(aq)toCu^(2+)(aq)+2Cl-(aq) , cell no...

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  4. Given E(Ag^(+)//Cu)^(@)=0.80V,E(Hg^(2+)//Mg)^(@)=0.79V E(Cu^(2+)//...

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  5. Corrosion of metals can be prevented by

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  6. E(1),E(2)andE(3) are the emf of the following three cells (i) Zn...

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  7. If .E(Sn^(+4)//Sn^(+2))^(@)=+0.15andE(Au^(3+)//Au)^(@)=1.5v Then for t...

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  8. The E(M^(3+)//M^(2+))^(@) value of cr , Mn Fe and Co are - 0.41, +1.57...

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  9. If Cu^(2+)+2etoCu, E^(@)=0.337v,Cu^(2+)+e to Cu, E^(@)=0.153v the...

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  10. Given Pb^(2+)//Pb=-0.12v,Zn^(2+)//Zn=-0.763v find emf of the followin...

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  11. E^(@) for Mg^(2+)//Mg=-2.37v,Zn^(2+)//Zn=-0.76vandFe^(2+)//Fe=-0.44v ...

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  12. Hydrogen gas in not liberated when the following metal is added to d...

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  13. On the basis of the following E^(@) values the strong - est oxidising...

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  14. Zn(s)+Cl(2)(1 atm ) to Zn^(2+)+2Cl^(-),E("Cell")^(@)of the cell is 2.1...

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  15. The standard reduction potential of hydrogen electrode at 1 M conc...

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  16. Alkali metals have high oxidation potential hence they behave as

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  17. When iron is rusted , it is

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  18. Chemical formula of rust is

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  19. The rusting of iron is catalysed by

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  20. Which one of the following metal is used in galvanisation ?

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