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What is electrode potential? - Chemistry

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प्रश्न

What is electrode potential?

What do you understand by electrode potential?

अति संक्षिप्त उत्तर
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उत्तर

The tendency of an electrode to lose or gain electrons when it is in contact with its own ions in solution is called electrode potential. The electrode potentials are responsible for the e.m.f. of a galvanic cell.

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अध्याय 3: Electrochemistry - Exercises [पृष्ठ ३९]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
अध्याय 3 Electrochemistry
Exercises | Q III. 35. | पृष्ठ ३९

संबंधित प्रश्न

Construct a labelled diagram for the following cell:

`Zn|Zn^(2+)(1M)||H^+(1M)|H_(2(g,1atm))|Pt`


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Fuel cell


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Define cathode


Why is anode in galvanic cell considered to be negative and cathode positive electrode?


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Given: \[\ce{E^0_{{Fe^{3+}|Fe^{2+}}}}\] = 0.771 V

\[\ce{E^0_{{Br_{2}|Br^-}}}\] = −1.09 V


Electrode potential for Mg electrode varies according to the equation

`E_(Mg^(2+)  |  Mg) = E_(Mg^(2+)  |  Mg)^Θ - 0.059/2 log  1/([Mg^(2+)])`. The graph of `E_(Mg^(2+)  |  Mg)` vs `log [Mg^(2+)]` is ______.


Which of the following statement is correct?


Use the data given in below find out the most stable ion in its reduced form.

`"E"_("Cr"_2"O"_7^(2-)//"Cr"^(3+))^⊖`= 1.33 V `"E"_("Cl"_2//"Cl"^-)^⊖` = 1.36 V

`"E"_("MnO"_4^-//"Mn"^(2+))^⊖` = 1.51 V `"E"_("Cr"^(3+)//"Cr")^⊖` = - 0.74 V


Can absolute electrode potential of an electrode be measured?


How will the pH of brine (aq. \[\ce{NaCl}\] solution) be affected when it is electrolysed?


Match the terms given in Column I with the units given in Column II.

Column I Column II
(i) Λm (a) S cm-¹
(ii) ECell (b) m-¹
(iii) K (c) S cm2 mol-¹
(iv) G* (d) V

Match the items of Column I and Column II.

Column I Column II
(i) K (a) I × t
(ii) Λm (b) `Λ_m/Λ_m^0`
(iii) α (c) `K/c`
(iv) Q (d) `G^∗/R`

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What is an electrochemical cell? What does it consist of?


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