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Why does a dry cell become dead after a...

Why does a dry cell become dead after a long time even if it has not been used ?

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A dry cell becomes dead after a long time even if it has not been used because the acidic `NH_(4) Cl` corrodes the zinc container.
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ARIHANT PUBLICATION-ELECTROCHEMISTRY-QUESTIONS FOR PRACTICE ( PART III ELECTROLCHEMICAL CELLS AND SERIES , NERNST EQUATIONS, BATTERIES AND CORROSION ) ( VERY SHORT ANSWER TYPE QUESTIONS)
  1. In the electrochemical cell, oxidation takes place at "………………..".

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  2. The cations on reaching "………." gain electrons and from neutral atoms ,...

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  3. What is the standard electrode potential of hydrogen electrode?

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  4. Represent the galvanic cell in which the reaction, Zn(s) + Cu^(2+) (aq...

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

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  6. Under what condition, E("cell") = 0 or Delta G = 0 ?

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  7. Can E("cell")^(@) or Delta r G ^(@) for cell reaction ever be equal t...

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  8. If a reaction has an equilibrium constant K lt 1, is E^(@) positive o...

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  9. Why does a dry cell become dead after a long time even if it has not ...

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  10. Unlike dry cell, the mercury cell has a constant cell potential throug...

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  11. Write the cell reaction of a lead storage battery when it is discharg...

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  12. Suggest two materials other than H2 that can be used as fuels in fuel ...

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  13. What advantage do the fuel cells have over primary and secondary batte...

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  14. Arrange the following metals in the order in which they displace each ...

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  15. Rusting of iron is quicker in saline water than in ordinary water. Giv...

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  16. Why does an alkaline medium inhibit the rusting of iron?

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  17. Why rusting of iron pipe can be prevented by joining it with a piece o...

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