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Choose the correct answer: In a Daniel c...

Choose the correct answer:
In a Daniel cell, when `E_(ext)>1.10V`, then current flows from Zn to Cu/Cu to Zn.

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Write the Nernst equation for the cell reaction in the Daniel cell. How will the E_(cell) be affected when concentration of Zn^(2+) ion is increased?

Three conductivity cells A, B and C containing solutions of zinc sulphate, silver nitrate and copper sulphate respectively are connected in series. A steady current of 1.5 amperes is passed through them until 1.45 g of silver is deposited at the cathode of cell B. How long did the current flow ? What mass of copper and what mass of zinc got deposited in their respective cells ? (Atomic mass : Zn = 65.4 u, Ag = 108 u, Cu = 63.5 u)

The standard EMF of Daniel cell is 1.10V. The maximum electrical work obtained from the cell is [If n=2]:

A galvanic cell has electrical potential of 1.1V. If an opposing potential of 1.1V is applied to this cell, what will happen to the cell reaction and current flowing through the cell?

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: ZnS is a tetrahedral arrangement. Reason:In ZnS, S^(2-) ions form cubic close packed structure.

A copper silver cell is set up. The copper ion concentration is 0.10 M. the concentration of silver ion is not known. The cell potential when measured was 0.422V. Determine the concentration of silver ions in the cell. Given: E_(Ag^+|Ag)=+0.80V , E_(Cu^(2+)|Cu)=+0.34V

The standard electrode potential for Daniell cell is 1. IV. Calculate the standard Gibbs energy for the reaction: Zn(s) + Cu^(2+) (aq) rarr Zn^(2+)(aq) + Cu(s)

Choose the correct option out of the following- Which alloy is made up of 95% Cu, 4% Sn, 1% P?

The tendencies of the electrodes made up of Cu,Zn and Ag to release electrons, when dipped in their respective salt solutions decreases in the order: ZngtAggtCu , CugtZngtAg , ZngtCugtAg , AggtCugtZn .

Which of the following statements are correct: Aluminium can displace Cu from CuSO_4 solution Fe from FeSO_4 solution Zn from ZnSO_4 solution Al from Al_2(SO_4)_3 solution

MODERN PUBLICATION-ELECTROCHEMISTRY-EXERCISE
  1. Choose the correct statement.

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  2. Electrical conductance of metals decreases with increase in temperatur...

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  3. Choose the correct answer: In a Daniel cell, when E(ext)>1.10V, then c...

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  4. Choose the correct answer: E(cell)^@ is directly/inversly proportional...

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  5. Choose the correct answer: By passing 96500 C of electriciy through aq...

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  6. Choose the correct answer: In the electrolysis of molten PbBr2, Br2/Pb...

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  7. Choose the correct answer: In Leclanche cell, zinc cylinder acts as a ...

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  8. Choose the correct statement.

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  9. Choose the correct answer: In mercury cell, zinc acts as anode/cathode...

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  10. Choose the correct answer: Presence of CO2 in natural water incrases/d...

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  11. Write Nernst equation for the following cell reaction: 2Al(s)+3Fe^(2+)...

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  12. State and explain Kohlrausch's law. How would you determine the molar ...

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  13. Write the overall cell reaction for lead storage battery.

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  14. How is cell potential related to the free energy change? State meaning...

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  15. Can we store copper sulphate solution in an iron vessel ?

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  16. What is the formular of rust?

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  17. Fill ups DeltaG^@ is related to e.m.f of the cell is……………. .

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  18. How does the concentration of sulphuric acid change in lead storage ba...

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  19. How many coulombs are required for the reduction of one mole of alumin...

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  20. Define molar conductivity or molar conductance?

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