Given: Zn²⁺(aq)+ 2e^- Zn(s); E° = -0.76 V

question 51

Multiple Choice

Given:
Zn²⁺(aq) + 2e^- Zn(s) ; E° = -0.76 V
Cr³⁺(aq) + 3e^- Cr(s) ; E° = -0.74 V
Fe²⁺(aq) + 2e^- Fe(s) ; E° = -0.41 V
Cd²⁺(aq) + 2e^- Cd(s) ; E° = -0.40 V
Sn²⁺(aq) + 2e^- Sn(s) ; E° = -0.15 V
Hg²⁺(aq) + 2e^- Hg(s) ; E° = 0.85 V
Au⁺(aq) + e^- Au(s) ; E° = 1.69 V
Under standard-state conditions,which of the following metals will reduce Hg²⁺ to Hg but will not reduce Cd²⁺ to Cd?

• A)Cr
• B)Zn
• C)Fe
• D)Sn
• E)Au