Select the image to explore the activity that shows how E ?cell, K eq, and ? G ?
ID: 807071 • Letter: S
Question
Select the image to explore the activity that shows how E?cell, Keq, and ?G? are related to each other.
Constants
The following constants may be useful when solving this tutorial.
Part A
Cu2+(aq)+Fe(s)?Cu(s)+Fe2+(aq)
Express your answer numerically to three significant figures.
difference between two electrodes under standard conditions is known as the standard cell potential (E?cell). The standard cell potential can be used to identify the overall tendency of a redox reaction to occur spontaneously. The spontaneity of a reaction is identified using the Gibbs free energy ?G?. ?G? is related to E?cell. E?cell and ?G? are also related to equilibrium constant Keq of the reaction.Select the image to explore the activity that shows how E?cell, Keq, and ?G? are related to each other.
In the activity, you should see a triangle, whose three vertices represent Keq, E?cell, and ?G?. You can select two vertices and determine the relation between them. You can then reset the activity and select the next two quantities.Constants
The following constants may be useful when solving this tutorial.
Constant Value E?Cu 0.34 V E?Fe -0.44V R 8.3145 J?mol?1?K?1 F 96,485 C/molPart A
In the activity, click on the E?cell and Keq quantities to observe how they are related. Use this relation to calculate Keq for the following redox reaction where the two half-reactions that occur in the cell are Fe(s)?Fe2+(aq)+2e? and Cu2+(aq)+2e??Cu(s):Cu2+(aq)+Fe(s)?Cu(s)+Fe2+(aq)
Express your answer numerically to three significant figures.
Keq = 1.21Explanation / Answer
Ecell = 0 - 8.315*298log(1.2*1014)/2*96485
ECell= 0.415*
b. G = -nFEcell
= -2*96485*0.415
= -800*102J
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.