nerst

$\Delta G^{\circ} = -nFE_{cell}^{\circ}$

Ian Morris 3C
Posts: 101
Joined: Wed Sep 18, 2019 12:18 am

nerst

how do we get the moles in nerst.

605110118
Posts: 75
Joined: Wed Sep 18, 2019 12:21 am

Re: nerst

You must first balance the equation and then use the number of electrons you cancel out as the value for n.

Chantel_2I
Posts: 109
Joined: Sat Sep 07, 2019 12:19 am

Re: nerst

After balancing the redox reaction, you can see how many moles of electrons are transferred in the reaction. Use the coefficient of e- after simplifying the balanced reaction.

Alice Ma 2K
Posts: 52
Joined: Wed Nov 13, 2019 12:26 am

Re: nerst

Once you balance the redox reaction, you'll be able to determine how many moles of electrons are transferred, and that's the number you would use for n.

Kallista McCarty 1C
Posts: 212
Joined: Wed Sep 18, 2019 12:18 am

Re: nerst

n is the number of electrons that are being transferred in the redox reaction. You find this number after balancing the equation.

LNgo 1G
Posts: 100
Joined: Sat Aug 24, 2019 12:16 am

Re: nerst

The n in the Nernst equation stands for the number of electrons transferred in the balanced reaction. The book says that the units of n is not moles and is just a unit less number. Then when you solve of delta G you get a value in J/mol since the moles don’t cancel out in your calculation.

Juana Abana 1G
Posts: 100
Joined: Wed Sep 18, 2019 12:15 am

Re: nerst

Your n value is found by balancing the equation and determining the number of electrons that it took to balance it. So basically your n value is the number of electrons that it took to balance the equation.

Matt F
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: nerst

Balancing the redox half reactions will give you n for the nernst equation, since you will balance the charges to determine how many electrons to add to both sides. There are no moles in the equation aside from the concentrations (mol.L-1) or in the Gas constant R