Using the Following Reduction Half-Reactions and Their Respective Standard Reduction

question 2

Multiple Choice

Using the following reduction half-reactions and their respective standard reduction potentials at 25 °C,draw a diagram of a galvanic cell.
Cr₂O₇^2-(aq) + 14 H⁺(aq) + 6e^- → 2 Cr³⁺(aq) + 7 H₂O(l) E° = +1.33 V
Zn²+(aq) + 2 e^- → Zn(s) E° = -0.763 V

• A)Zn²⁺(aq)∣ Zn(s),H⁺(aq) Cr₂O₇^2-(aq),Cr(s)∣ Cr³⁺(aq)
• B)Zn(s)∣ Zn²⁺(aq) H⁺(aq),Cr³⁺(aq)∣ Cr(s)
• C)Cr(s)∣ Cr³⁺(aq),H⁺(aq),Cr₂O₇^2-(aq) Zn(
• S)∣ Zn²⁺(aq)
• D)Zn(s)∣ Zn²⁺(aq) Cr₂O₇^2-(aq),H⁺(aq),Cr³⁺(aq)∣ Pt(s)
• E)Pt(s)∣ Cr³⁺(aq),Cr₂O₇^2-(aq),H+(aq) Zn²⁺(aq)∣ Zn(s)

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Definitions:

Investment Project

A project that involves allocating resources like capital, manpower, and time with the expectation of generating future returns over the project’s lifespan.

Internal Rate Of Return

A financial metric used to evaluate the profitability of an investment, representing the interest rate where the net present value of all cash flows is zero.

Salvage Value

The calculated leftover value of an asset once it has reached the end of its service life.

Payback Period

The amount of time it takes for an investment to generate an amount of income or cash equivalent to the cost of the investment, used to evaluate the efficiency of an investment.