A) \[E_{cell}^{o}\] cell should be infinite
B) \[E_{cell}^{o}\] cell should be zero
C) \[E_{cell}^{o}\] cell should be positive
D) \[E_{cell}^{o}\] cell should be negative
Correct Answer: C
Solution :
Key Idea \[{{E}^{o}}_{cell}={{E}^{o}}_{C}-{{E}^{o}}_{A}\] For spontaneous reaction \[{{E}^{o}}_{cell}\] must be positive. If \[{{E}^{o}}_{cell}\] ceil is negative or zero, then cell will not work.
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