Author Question: Calculate the cell potential for the following unbalanced reaction that takes place in an ... (Read 52 times)

mckennatimberlake · **on:** Nov 18, 2019

Question 1

Calculate the cell potential for the following unbalanced reaction that takes place in an electrochemical cell at 25 °C when [Cr³⁺] = 0.945 M and [Zn²⁺] = 1.37 M

Zn(s) + Cr³⁺(aq) → Zn²⁺(aq) + Cr(s)

E°(Zn2+/Zn) = -0.76 V and E°(Cr3+/Cr) = -0.73 V

◦ -0.03 V
◦ -1.18 V
◦ +0.03 V
◦ +0.49 V
◦ +1.18 V

Question 2

Calculate the cell potential for the following unbalanced reaction that takes place in an electrochemical cell at 25 °C when [Cr³⁺] = 2.00 M and [Zn²⁺] = 0.00300 M

Zn(s) + Cr³⁺(aq) → Zn²⁺(aq) + Cr(s)

E°(Zn2+/Zn) = -0.76 V and E°(Cr3+/Cr) = -0.73 V

◦ +0.11 V
◦ +0.02 V
◦ +0.06 V
◦ -0.19 V
◦ +1.30 V

mcarey591 · **Reply #1 on:** Nov 18, 2019

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