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Which of the following statements is wro...

Which of the following statements is wrong about galvanic cells?

A

Cathode is the positive electrode

B

cathode is the negative electrode

C

electrons flow from cathode to anode in the external circuit

D

reduction occurs at cathode

Text Solution

Verified by Experts

The correct Answer is:
B, C
Reduction and electronation take place at cathode electrode, so it become positive electrode.
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RESONANCE-ELECTROCHEMISRY-Exercise
  1. The sp. Cond. Of a saturated solution of AgCl at 25^(@)C after subtrac...

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  2. In a galvanic cell

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  3. Which of the following statements is wrong about galvanic cells?

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  4. Which of the following is/are function(s) of salt-bridge?

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  5. Salt bridge contains

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  6. E^(0) for F(2)+2eto2F^(-) is 2.8V,E^(0) for (1)/(2)F(2)toF^(-) is

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  7. Consider the cell potentials E(Mg^(2+)|Mg)^(0)=-2.37V and E(Fe^(3+)|Fe...

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  8. If a spoon of copper metal is placed in a solution of ferrous sulphate...

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  9. The position of some metals in the electrochemical series in dectreasi...

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  10. Given : E^(c-).(Ag^(o+)|Ag)=0.80V, E^(c-).(Mg^(2+)|Mg)=-2.37V, E^(...

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  11. For Zn^(2+) //Zn, E^@ =- 0. 76 V, for Ag^+ //Af E^@ =0.799 V. The cor...

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  12. Electrode potential data are given below: Fe^(3+)(aq)+e^(-)rarrFe^(...

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  13. The electrode potential becomes equal to standard electrode potential ...

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  14. Given standard electrode potentials: Fe^(3+)+3e^(-)toFe,E^(@)=-0.036...

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  15. Cu^(+) + e^(-) rightarrow Cu, E^(@) = x1volt, Cu^(2+) + 2e^(-) right...

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  16. Any redox reaction would occur spontaneously, if:

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  17. KCl can be used in salt bridge as electrolyte in which of the followin...

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  18. The reaction (1)/(2)H(2)(g)+AgCl(s)hArrH^(+)(aq)+Cl^(-)(aq)+Ag(s) ...

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  19. Which of the followig statements about the spontaneous reaction occurr...

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  20. The standard emf of the cell, Ni|Ni^(2+)(1.0M)||Ag^(+)(1.0M)|Ag [E^(@)...

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