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Author Question: Calculate the cell potential for the following unbalanced reaction that takes place in an ... (Read 91 times)

mckennatimberlake

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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


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Marked as best answer by mckennatimberlake on Nov 18, 2019

mcarey591

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mckennatimberlake

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Reply 2 on: Nov 18, 2019
Wow, this really help


Perkypinki

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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