The relationship between Gibbs free energy and E°cell involves n and F. These are, respectively,

Question

BlackTom AI · Accepted Answer

First, let’s restate the question and the available choices to set the stage for analysis.
Question: The relationship between Gibbs free energy and E°cell involves n and F. These are, respectively,
Options:
- number of moles of electrons and the Faraday constant.
- moles of reactant and the Farad (unit of capacitance).
- number of moles of electrons and the Faraday constant.
- moles of reactant and the Faraday constant.
- number of electrons and the Farad.
- number of electrons and the Free Energy.

Option 1: number of moles of electrons and the Faraday constant. This is a close match to the standard formulation ΔG° = -nFE°, where n is the number of moles of electrons transferred in the redox reaction and F is the Faraday constant. The wording correctly identifies both quantities.

Option 2: moles of reactant and the Farad (unit of capacitance). Here, moles of reactant is not the standard n in the equation; also, 'Farad' is a unit of capacitance, not a constant used in electrochemistry. This misstates both components: the wrong species count and the incorrect unit.

Option 3: number of moles of electrons and the Faraday constant. This option is essentially equivalent to Option 1 in substance, since the Faraday constant is the correct symbol for F. The phrase 'number of moles of electrons' aligns with the conventional n in the equation.

Option 4: moles of reactant and the Faraday constant. 'Moles of reactant' is not the standard n that appears in the equation; while the Faraday constant is correct, pairing it with the incorrect n makes this option inaccurate.

Option 5: number of electrons and the Farad. 'Number of electrons' is a plausible phrasing, but using 'Farad' instead of 'Faraday constant' is incorrect because the equation uses the Faraday constant, not a unit of capacitance. This conflates a physical quantity with its unit, leading to a conceptual error.

Option 6: number of electrons and the Free Energy. While 'number of electrons' is a reasonable interpretation for n, the second term should be the Faraday constant, not the Free Energy itself. This choice mixes the dependent variable with the independent constant inappropriately.

In summary, Option 1 and Option 3 both convey correct information, since they state the same idea using slightly different wording: n is the number of moles of electrons transferred, and F is the Faraday constant. The other options introduce errors by misidentifying n as moles of reactant, confusing Faraday with Farad, or substituting Free Energy for the constant F.

CHM-1020-LD01.2025SU Quiz- 7 (Electrochemistry)

The relationship between Gibbs free energy and E°cell involves n and F. These are, respectively,

查看解析

登录即可查看完整答案

类似问题

When potassium hydroxide is combined with _______, the chemical reaction promotes current flow in the presence of an applied voltage.

A galvanic cell is constructed from the Sn4+/Sn2+ and Zn2+/Zn half cells. With reference to the Standard Reduction Potential Table the formula sheet, which of the following statements is correct about this cell?

In a fuel cell,

In an electrochemical cell, the anode is

What is the true about concentration cell?

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单