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Nernst equation halps us to understand t...

Nernst equation halps us to understand the effect of `"______"` on the electrode of the half-cell and `emf` of the voltiv cell

A

Concentration of electrolytic solutions

B

temperature

C

Both a& b

D

None

Text Solution

Verified by Experts

The correct Answer is:
C
Concentration of electrolytic solutions, temperature
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Calculating the emf from standard potentials: A galvanic cell consists of an Al electrode in a 1.0M Al(NO_(3))_(3) solution and an Fe electrode in a 1.0M Fe(NO_(3))_(2) solution. Calculate the standard emf of this electrohemical cell at 25^(@)C . Also write the cell reaction. Strategy: From the table of standard electrode potentials, write the two reduction half reaction and standard electrode potentials for the cell. Change the direction of the half-cell reaction corresponding tol the smaller (or more negative) electrode potential. Multiply the when the half-reactions are added the electrons cancel. The sum of the half-reactions is the cell reaction. Add the electrode potentials to get the cell emf.

PRADEEP-ELECTROCHEMISTRY-TEST YOUR GRIP (FILL IN THE BLANKS)
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  4. Out of specific, equivalent and molar conductivities, the quantity whi...

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  6. According to Kohlrausch'a law, wedge(m)^(@) for electrolyte A(x)B(y)=.

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  7. Ionic mobility=("Ionic conductance")/("")

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  8. In a galvanic cell, the electrode which acts as anode is a pole.

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  9. In a galvanic cell, the electrons flow from :

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  10. KCl, KNO(3) etc. are preferred in a salt bridge because they have equa...

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  11. CALOMEL ELECTRODE

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  13. If E(Red)^(@) for Ag^(+)+e^(-)toAg is 0.80 V, then for the reaction 2A...

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  15. In the electrolysis of aqueous NaCl solution, Cl(2) is produced at the...

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  16. In Leclanche cell, MnO(2) acts as a.

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  17. In lead storage battery, the cathode consists of.

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  18. The efficiency of a fuel cell is given by:

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  19. The process of protecting iron by coating with Zinc.

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  20. The energy of one joule per second given out by a source is called.

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