Talk:Gnaiger 2018 MiPschool Tromso A2: Difference between revisions
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::::## What is the meaning of the symbol ''z''<sub>O2</sub>? โ [[Charge number]] of O<sub>2</sub> = 4 ย | ::::## What is the meaning of the symbol ''z''<sub>O2</sub>? โ [[Charge number]] of O<sub>2</sub> = 4 ย | ||
::::## How are the units of electric energy [J] and electric force [V] related? โ V = J/C ย | ::::## How are the units of electric energy [J] and electric force [V] related? โ V = J/C ย | ||
::::## Express -460 kJ/mol in units of volt [V]. โ -460 [kJ/mol]/(4ยท''e''ยท''N''<sub>A</sub> [C/mol]) = -460 [kJ/mol]/(4ยท96,485.33 [C/mol]) = -0.00119189 kJ/C = -1.2 J/C = -1.2 Vย ย ย | ::::## Express -460 kJ/mol O<sub>2</sub> in units of volt [V]. โ -460 [kJ/mol]/(4ยท''e''ยท''N''<sub>A</sub> [C/mol]) = -460 [kJ/mol]/(4ยท96,485.33 [C/mol]) = -0.00119189 kJ/C = -1.2 J/C = -1.2 Vย ย ย | ||
::::## Why should we do that? โ To relate the driving force of electron transfer to the pmf, we have to express both forces in identical [[motive unit]]s [MU], converting either the force of the chemical reaction from the [[molar format]] to the [[electrical format]], or the pmf from the electrical to the molar format. | ::::## Why should we do that? โ To relate the driving force of electron transfer to the pmf, we have to express both forces in identical [[motive unit]]s [MU], converting either the force of the chemical reaction from the [[molar format]] to the [[electrical format]], or the pmf from the electrical to the molar format. |
Revision as of 18:27, 14 October 2018
Answers
- Convert the molar format of the Gibbs force of reaction, ฮkFnO2 [kJ/mol], into the electrical format, ฮkFeO2 [V].
- Which physicochemical constant is required? โ The Faraday constant, F = eยทNA = 96,485.33 C/mol
- What is the meaning of the symbol zO2? โ Charge number of O2 = 4
- How are the units of electric energy [J] and electric force [V] related? โ V = J/C
- Express -460 kJ/mol O2 in units of volt [V]. โ -460 [kJ/mol]/(4ยทeยทNA [C/mol]) = -460 [kJ/mol]/(4ยท96,485.33 [C/mol]) = -0.00119189 kJ/C = -1.2 J/C = -1.2 V
- Why should we do that? โ To relate the driving force of electron transfer to the pmf, we have to express both forces in identical motive units [MU], converting either the force of the chemical reaction from the molar format to the electrical format, or the pmf from the electrical to the molar format.