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प्रश्न
Write the name of the cell which is generally used in transistors. Write the reactions taking place at the anode and the cathode of this cell.
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उत्तर
The dry cell (also known as Leclanche cell) is used in transistors.
The reactions taking place at the anode and cathode are given below.
At anode: Zn(s) → Zn2+ + 2e−
At cathode : `MnO_2 + NH_4^+ + e^(-) -> MnO(OH) + NH_3`
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संबंधित प्रश्न
The charge of how many coulomb is required to deposit 1.0 g of sodium metal (molar mass 23.0 g mol-1) from sodium ions is -
- 2098
- 96500
- 193000
- 4196
Following reactions occur at cathode during the electrolysis of aqueous sodium chloride solution:
Na+(aq) + e− ⟶ Na (s) E0 = 2.71 V
H+(aq) + e− ⟶ `1/2` H2 (g) E0 = 0.00 V
On the basis of their standard reduction electrode potential (E0) values, which reaction is feasible at the cathode and why?
How much charge is required for the following reduction?
1 mol of \[\ce{MnO^-_4}\] to Mn2+.
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(A) 1 : 2
(B) 2 : 1
(C) 1 : 8
(D) 8 : 1
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Reason (R): The electrode potential of Cu2+/Cu is greater than that of H+/H2.
Select the most appropriate answer from the options given below:
