neg vs pos

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annikaying
Posts: 94
Joined: Sat Sep 14, 2019 12:16 am

neg vs pos

Postby annikaying » Sun Feb 23, 2020 3:53 pm

What does it mean for voltage to be negative verses positive?

JonathanS 1H
Posts: 101
Joined: Thu Jul 11, 2019 12:17 am

Re: neg vs pos

Postby JonathanS 1H » Sun Feb 23, 2020 4:29 pm

If voltage is positive, we have a galvanic cell which creates a flow of e- from the anode to the cathode. If we have negative voltage, we have a flow of e- from cathode to anode, which means we do not have a working cell.

Alex Tchekanov Dis 2k
Posts: 118
Joined: Sat Aug 24, 2019 12:16 am

Re: neg vs pos

Postby Alex Tchekanov Dis 2k » Sun Feb 23, 2020 4:33 pm

Also, if the voltage is negative, it will not spontaneously react, however, if you add a current to the reactions (adding energy) it can still proceed.

Robert Tran 1B
Posts: 118
Joined: Thu Jul 11, 2019 12:15 am

Re: neg vs pos

Postby Robert Tran 1B » Sun Feb 23, 2020 5:29 pm

If the voltage of the cell is negative, then the cell does not have a spontaneous reaction in the specified direction.

sarahsalama2E
Posts: 164
Joined: Fri Aug 30, 2019 12:16 am

Re: neg vs pos

Postby sarahsalama2E » Sun Feb 23, 2020 5:32 pm

A negative cell voltage -- reaction will occur spontaneously but in the opposite direction as compared to the forward.
A positive cell voltage--reaction will occur spontaneously.

Anisha Chandra 1K
Posts: 118
Joined: Thu Jul 11, 2019 12:17 am

Re: neg vs pos

Postby Anisha Chandra 1K » Sun Feb 23, 2020 5:33 pm

A positive voltage is associated with a positive Ecell, which means that a reaction has more pushing and pulling power to generate a high potential difference.

Gabriella Bates 2L
Posts: 113
Joined: Thu Jul 11, 2019 12:15 am

Re: neg vs pos

Postby Gabriella Bates 2L » Sun Feb 23, 2020 5:59 pm

If the voltage is positive, the reaction will occur spontaneously, and therefore creates a working battery. If the voltage is negative, the reaction does no occur spontaneously, and therefore does not create a working battery.

Noe BM 1J
Posts: 50
Joined: Sat Sep 07, 2019 12:17 am

Re: neg vs pos

Postby Noe BM 1J » Sun Feb 23, 2020 6:01 pm

For the first part of your answer, this means that the reaction will not occur spontaneously in the forward reaction, right?

sarahsalama2E wrote:A negative cell voltage -- reaction will occur spontaneously but in the opposite direction as compared to the forward.
A positive cell voltage--reaction will occur spontaneously.

Emil Velasco 1H
Posts: 96
Joined: Wed Nov 21, 2018 12:19 am

Re: neg vs pos

Postby Emil Velasco 1H » Sun Feb 23, 2020 6:06 pm

Positive voltage = spontaneous reaction
Negative voltage = nonspontaneous reaction

Bryce Barbee
Posts: 103
Joined: Wed Sep 18, 2019 12:20 am

Re: neg vs pos

Postby Bryce Barbee » Sun Feb 23, 2020 6:09 pm

I believe that it relates to if the process is spontaneous. If negative, then it is not spontaneous. If positive, it is spontaneous.


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