Electrochemistry

NEET level, single correct, medium

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Question 2 of 4

In the given standard electrochemical Daniell cell with zinc and copper half-cells connected by a salt bridge, the standard electromotive force Ecell∘E^\circ_{cell} at 298 K298\,\text{K} is: (EZn2+/Zn∘=−0.76 VE^\circ_{Zn^{2+}/Zn} = -0.76\,\text{V}, ECu2+/Cu∘=+0.34 VE^\circ_{Cu^{2+}/Cu} = +0.34\,\text{V}):

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Answer: (C) +1.10 V+1.10\,\text{V}

Ecell∘=Ecathode∘−Eanode∘=0.34−(−0.76)=+1.10 VE^\circ_{cell} = E^\circ_{cathode} - E^\circ_{anode} = 0.34 - (-0.76) = +1.10\,\text{V}.

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