SATHEE: Redox Reactions And Electrochemistry Ques 646

Redox Reactions And Electrochemistry Ques 646

Question: The solution of $C u S O_{4}$ in which copper rod is immersed is diluted to 10 times. The reduction electrode potential

Options:

A) Increases by $30 m V$

B) Decreases by $30 m V$

C) Increases by $59 m V$

D) Decreases by $59 m V$

Show Answer

Answer:

Correct Answer: B

Solution:

[b] ${(E_{C u^{2 +} / C u})}_{1} = E_{C u^{2 +} / C u}^{0} + \frac{0.059}{2} \log {[C u^{2 +}]}_{1}$

$[C u^{2 +} (a q) + 2 e^{-} \overset{}{\to} C u (s)$ and ${(E_{C u^{2 +} / C u})}_{2} = E_{C u^{2 +} / C u}^{0} + \frac{0.059}{2} \log {[C u^{2 +}]}_{2}$

$\Rightarrow Δ E_{C u^{2 +} / C u} = - \frac{0.059}{2} \log (\frac{C_{2}}{C_{1}})$ $= - \frac{0.059}{2} l o g, 10 = - 0.030 V = - 30, m V$

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Redox Reactions And Electrochemistry Ques 646

Question: The solution of CuSO4 in which copper rod is immersed is diluted to 10 times. The reduction electrode potential

Options:

Answer:

Solution:

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Question: The solution of $C u S O_{4}$ in which copper rod is immersed is diluted to 10 times. The reduction electrode potential