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Electrochemical Series

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The arrangement of various electrodes in the decreasing order of their standard reduction potentials is called electrochemical series.
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Most metal oxide are thermally stable at temperature upto 1000^(@)C but the oxide of metals below hydrogen in the electrochemical series fairly. Thus HgO and Ag_(2)O decomposes on heating. Q. Which of the following salt salt does not give NO_(2) gas on heating?

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Assertion (A): Cu liberates H_(2)(g) from a dilute solution of HCl . Reason (R): Hydrogen is below Cu in the electrochemical series. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) . (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A) . (c)If (A) is correct, but (R) is incorrect. (d)If both (A) and (R) are incorrect.

Which of the following is not a correct statement about electrochemical series of reduction potentials ? (A)The standard electrode potential of hydrogen is 0.00 volts. (B)Active non-metals have positive reduction potentials. (C)Active metals have negative reduction potentials. (D)Metals which have positive reduction potentials are good reducing agent

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Define the Electrochemical reaction.

In an electrochemical process, a salt bridge is used:

ICSE-ELECTROCHEMISTRY-EXERCISE (PART-II Descriptive Questions)
  1. How can the reduction potential of an electrode increased ?

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  2. Under what conditions will a galvanic cell send no current into outer...

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  3. Electrochemical Series

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  4. Write the symbolic notation for standard hydrogen electrode and its p...

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  5. Write Nernst equation for the electrode reaction: M^(n+) +n e^(-) t...

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  6. Write Nernst equation for the reaction: (i) 2Cr(s) +3Cd^(2+)(aq) to...

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  7. Discuss the relation between free energy and EMF.

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  8. Why is equilibrium constant K related to only E("cell")^(Theta) and n...

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  9. What is the relationship between specific conductance and equivalent c...

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  10. The unit of equivalent conductance is :

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  11. What is meant by cell constant ?

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  12. Express mathematically relationship among the resistance (R ), specifi...

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  13. Define the term molar conductivity.

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  14. How is the unit of molar conductivity arrived ?

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  15. State Kohlrausch law for electrical conductance of an electrolyte at ...

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  16. What is the effect of decreasing concentration on the molar conductiv...

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  17. Express mathematically the relationship among the degree of dissociat...

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  18. Write mathematical expression for Kohlrausch law.

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  19. Write Debye-Huckel-Onsager equation. What do different symbols signif...

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  20. How does electrical conductivity of semiconductors vary with temperat...

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