What is the eV unit?  [ENDORSED]


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Toshio_Kanazawa_3B
Posts: 4
Joined: Wed Sep 21, 2016 2:58 pm

What is the eV unit?

Postby Toshio_Kanazawa_3B » Fri Sep 30, 2016 11:18 am

Hey everyone, so I don't exactly get what the electron volt unit means. I know it's used to describe work function values, but what exactly does it show?

Daniel_Callos_4I
Posts: 16
Joined: Wed Sep 21, 2016 2:57 pm

Re: What is the eV unit?

Postby Daniel_Callos_4I » Fri Sep 30, 2016 11:49 am

Hey,
The electron volt is the amount of work (force over a distance) necessary to move an electron across an electrical pressure difference of one volt.

Hope this helps and happy chemistry!

-Dan Callos

NicholasKillmeier3K
Posts: 12
Joined: Wed Sep 21, 2016 2:56 pm

Re: What is the eV unit?  [ENDORSED]

Postby NicholasKillmeier3K » Sat Oct 08, 2016 10:37 pm

Also,

1 eV= 1.602x10(-19)Joules

1 J (Joule) =(1kg x m2 x s(-2))

Hope this helps!

sid bauer
Posts: 20
Joined: Wed Nov 16, 2016 3:04 am

Re: What is the eV unit?

Postby sid bauer » Sun Jul 09, 2017 7:18 pm

Also the term electron volt is self defining in that 1 eV is literally the charge of one electron times 1 Volt.
(1.6 x 10 ^-19 C) * (1 kg m^2 s^-2 C^-1) = 1.6 * 10^-19 J

In reality it is just about having ease of units more than anything else

Hope this helps!

Stef Newell
Posts: 20
Joined: Fri Sep 29, 2017 7:04 am

Re: What is the eV unit?

Postby Stef Newell » Thu Oct 12, 2017 3:11 pm

eV is short for "electron volt" which is the amount of work required to move one electron through one volt of electrical pressure difference.

Courtney Cheney 3E
Posts: 19
Joined: Fri Sep 29, 2017 7:07 am

Re: What is the eV unit?

Postby Courtney Cheney 3E » Sat Oct 14, 2017 5:54 pm

Is it necessary to memorize the conversion J?

Adrian Franco 3H
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Joined: Fri Sep 29, 2017 7:06 am
Been upvoted: 1 time

Re: What is the eV unit?

Postby Adrian Franco 3H » Mon Oct 16, 2017 11:52 pm

Courtney Cheney 3E wrote:Is it necessary to memorize the conversion J?



Yes, I recommend that you memorize it since some problems in the book are in keV and eV. But that conversion you listed is given on the test anyway.


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