Using the Following Data,determine for the Electrochemical Cell Constructed $\to$

question 46

Multiple Choice

Using the following data,determine for the electrochemical cell constructed using the reaction of zinc and chromate ions under basic conditions.Unbalanced: Zn(s) + 2 CrO₄^2-(aq) $\to$ Zn(OH) ₂(s) + Cr(OH) ₃(s)
Half-reaction Standard reduction potential
Zn(OH) ₂(s) + 2 e^- $\to$ Zn(s) + 2 OH^-(aq) -1.25
CrO₄^2-(aq) + 4 H₂O( ) + 3 e^- $\to$ Cr(OH) ₃(s) + 5 OH^-(aq) -0.13

• A)"-3.49 V"
• B)"+3.49 V"
• C)"+1.12 V"
• D)"-1.12 V"
• E)"+1.38 V"

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