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The value of Eºcell for the reaction Zn(s) + Cu 2+ (aq) <=> Zn 2+ (aq) + Cu(s) i

ID: 523405 • Letter: T

Question

The value of Eºcell for the reaction Zn(s) + Cu2+(aq) <=> Zn2+(aq) + Cu(s) is 1.10 V. What is the value of E for a cell in which [Cu2+] = 1.0 x 10-3 M and [Zn2+] = 1.0 M? Answer: 1.01 V Please explain step by step in a clear way! The value of Eºcell for the reaction Zn(s) + Cu2+(aq) <=> Zn2+(aq) + Cu(s) is 1.10 V. What is the value of E for a cell in which [Cu2+] = 1.0 x 10-3 M and [Zn2+] = 1.0 M? Answer: 1.01 V Please explain step by step in a clear way! The value of Eºcell for the reaction Zn(s) + Cu2+(aq) <=> Zn2+(aq) + Cu(s) is 1.10 V. What is the value of E for a cell in which [Cu2+] = 1.0 x 10-3 M and [Zn2+] = 1.0 M? Answer: 1.01 V Please explain step by step in a clear way!

Explanation / Answer

Number of electron being transferred in balanced reaction is 2

So, n = 2

Use:

E = Eo - (2.303*RT/nF) log {[Zn2+]^1/[Cu2+]^1}

2.303*R*T/n = 2.303*8.314*298.0/F= 0.0591

E = Eo - (0.0591/n) log {[Zn2+]^1/[Cu2+]^1}

E = 1.1 - (0.0591/2) log (1.0^1/0.001^1)

E = 1.1-(0.089)

E = 1.011 V

Answer: 1.011 V