If the standard potential for Cu²⁺(aq)/Cu⁺(aq)is 0.15 V and the standard potential for Cu²⁺(aq)/Cu(s)is 0.34 V,calculate the standard potential for Cu⁺(aq)+ e^- $\rightarrow$ Cu(s).

Question

Quizplus · Accepted Answer

The final redox equation can be written as:
CuS1U1P1+S1S1P0(aq) + Cu(s) → CuS1U1P12+S1S1P0(aq) + CuS1U1P1S1S1P0F1F1F10S1S1U1P1-
The standard potential for this redox equation can be calculated by adding the standard potentials of the two half-reactions:
CuS1U1P12+S1S1P0(aq)/CuS1U1P1+S1S1P0(aq) (given) with a potential of 0.15 V
Cu(s)/CuS1U1P12+S1S1P0(aq) (given) with a potential of 0.34 V
By adding those two values, we obtain:
0.15 V + 0.34 V = 0.49 V
However, since the electrons are on the left side of the overall equation, we need to reverse the sign of the potential to obtain the final answer:
-0.49 V = +0.49 V
Therefore, the correct answer is (C) +0.53 V, which is the closest value to 0.49 V.

If the Standard Potential for Cu2+(aq)/Cu+(aq)is 0 →\rightarrow→ Cu(s) A)+0

If the Standard Potential for Cu²⁺(aq)/Cu⁺(aq)is 0 $\rightarrow$ Cu(s)
A)+0