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A Daniell cell is a device that transforms chemical energy released by redox reactions into electrical energy. It has a 1.1 V electrical potential. Zinc (Zn), which serves as the anode in a Daniell Cell, and Copper (Cu), which serves as the cathode, are the two different metals in use. Each of these electrodes continues to be immersed in ion ...
Daniel cell consists of 2 half cells: A Zn rod placed in contact with ZnSO4 & a Cu metal in contact with CuSO4 solution. These are connected by salt bridge consisting a saturated solution of either KCl,KN O3orN H 4N O3.
Nernst equation for Daniel cell at equilibrium condition: E c e l l = E o c e l l − 0.0592 n l o g K E c e l l = E o c e l l − 0.0592 2 l o g [ Z n 2 + ] [ C u 2 + ]
The magnitude of standard Gibbs free energy for the given cell reaction in K J m o l − 1 a t 298 K is Z n ( s ) + C u 2 + ( a q ) → Z n 2 + ( a q ) + C u ( s ) , E ∘ = 2 V a t 298 K ( F a r a d a y ′ s c o n s t a n t , F = 96000 C m o l − 1 )
Assertion :For a Daniell cell : Z n | Z n 2 + | | C u 2 + | C u with E c e l l = 1.1 V the application of opposite potential greater than 1.1 V results into the flow of electrons from cathode an anode. Reason: Zn is deposited at anode and Cu is dissolved at cathode. Both Assertion and Reason are correct and Reason is the correct explanation for ...
When Daniel cell is connected in a circuit, the two electrons on the zinc rod pass through the external circuit and reach the copper vessel thus neutalizing the copper ions. This constitutes an electric current from copper to zinc. Daniel cell produces an emf of 1.08 V.
Daniel celI is an electrochemical cell in which C u acts as cathode and Z n acts as an anode. In Daniel ...
The electrode potential for the Daniell cell given is 1.1 V. Z n ( s ) | Z n 2 + ( a q ) | | C u 2 + ( a q ) | C u ( s ) Write overall cell reaction and calculate the standard Gibb's energy for the reaction.
The emf of a Daniel cell at 298 K is E 1 concentration of Z n S O 4 is 0.1 M and that C u S O 4 is 0.01 M, the emf changed to E 2.What is the relationship between E 1 and E 2 View Solution Q 4
A galvanic cell is an electrochemical cell that derives electrical energy from spontaneous redox reactions taking place within the cell. It generally consists of two different metals connected by a salt bridge or individual half-cells separated by a porous membrane. Daniel cell is a galvanic cell.
