## Log version vs ln Version

$E_{cell} = E_{cell}^{\circ}-\frac{RT}{nF}\ln Q$

Ricky Ma DIS 4E
Posts: 72
Joined: Fri Sep 28, 2018 12:27 am

### Log version vs ln Version

How do we know which one to use? Does it matter?

Tuong-Minh Tran 1C
Posts: 30
Joined: Fri Sep 28, 2018 12:19 am

### Re: Log version vs ln Version

It actually doesn't matter whether you use the log version or the ln version; the log version is an altered version of the ln version, so both should give the same result.

705170809
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Joined: Fri Sep 28, 2018 12:26 am
Been upvoted: 1 time

### Re: Log version vs ln Version

I would recommend using the ln version more because that version is given in the formula sheet

Yvonne Du
Posts: 64
Joined: Fri Sep 28, 2018 12:23 am

### Re: Log version vs ln Version

The ln version might be more convenient, but both log and ln give the same ratio/result.

KHuang1L
Posts: 60
Joined: Fri Sep 28, 2018 12:19 am

### Re: Log version vs ln Version

It does not matter. But using log is more convenient when calculating for pH.

Alysa Rallistan 2G
Posts: 32
Joined: Thu Jan 17, 2019 12:16 am

### Re: Log version vs ln Version

It really shouldn't matter the difference is simply their base number (log with base 10 and ln with base e)

Anand Narayan 1G
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

### Re: Log version vs ln Version

It does not matter which one you use, however I would use the ln one, since that is the one that is included on the equation sheet that we are given on tests and the final

Kyither Min 2K
Posts: 60
Joined: Wed Oct 03, 2018 12:15 am

### Re: Log version vs ln Version

Both versions give you the right answer. However, on the equation sheet, the log version is a constant over n, so you have to keep in mind that the constant given can only be used if the reaction is taking place at 25 Celsius.

Return to “Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)”

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