SATHEE: Redox Reactions And Electrochemistry Ques 168

Redox Reactions And Electrochemistry Ques 168

Question: The standard electrode potential $(E^{o})$ for $O C l^{-} / C l^{-}$ and $C l^{-} / \frac{1}{2} C l_{2}$ respectively are $0.94, V$ and $- 1.36, V$ . The $E^{o}$ value for $O C l^{-} / \frac{1}{2} C l_{2}$ will be [KCET 1996]

Options:

A) $- 0.42, V$

B) $-, 2.20, V$

C) $0.52, V$

D) $1.04, V$

Show Answer

Answer:

Correct Answer: A

Solution:

$O C l^{-} \to C^{-},, E^{o} = 0.94 V$ $C l^{-} \to \frac{1}{2} C l_{2} + e^{-} E^{o} = - 1.36, V$ adding the two equations, we get $O C l^{-} \to \frac{1}{2} C l_{2},, E^{o} = 0.94 - 1.36 = - 0.42, V$ .

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Redox Reactions And Electrochemistry Ques 168

Question: The standard electrode potential (Eo) for OCl−/Cl− and Cl−/12Cl2 respectively are 0.94,V and −1.36,V . The Eo value for OCl−/12Cl2 will be [KCET 1996]

Options:

Answer:

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Question: The standard electrode potential $(E^{o})$ for $O C l^{-} / C l^{-}$ and $C l^{-} / \frac{1}{2} C l_{2}$ respectively are $0.94, V$ and $- 1.36, V$ . The $E^{o}$ value for $O C l^{-} / \frac{1}{2} C l_{2}$ will be [KCET 1996]