Electrochemistry Question

[Ashley3323]

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Hey guys,
I was wondering if anyone can clarify this for me:
if at equilibrium , delta G=0, then E=Estandard or Estandard =0? im confused!

 

[DAT Destroyer]

Hey guys,
I was wondering if anyone can clarify this for me:
if at equilibrium , delta G=0, then E=Estandard or Estandard =0? im confused!

Ashley3323

At equilibrium, the potential of the cell is zero. The reaction progresses forward and backwards at the same rate meaning there is no net electron flow. With no electron flow, there is no current and the potential is equal to zero.

Hope this helps.

Dr. Romano

 

[Incis0r]

Estandard is the voltage at standard conditions. That will never change. That assumes 1M/1atm concentrations of reactants and products at 1 atm, 25C (different from STP, which is 1atm, 0C). This is a textbook value that is used for reference in the Nernst Equation.

Ecell is the one that changes.
In the Nernst equation below, the E without the standard symbol will change

 

[Ashley3323]

Estandard is the voltage at standard conditions. That will never change. That assumes 1M/1atm concentrations of reactants and products at 1 atm, 25C (different from STP, which is 1atm, 0C). This is a textbook value that is used for reference in the Nernst Equation.

Ecell is the one that changes.
In the Nernst equation below, the E without the standard symbol will change

thank you ! that makes sense!!!

 

[Ashley3323]

Ashley3323

At equilibrium, the potential of the cell is zero. The reaction progresses forward and backwards at the same rate meaning there is no net electron flow. With no electron flow, there is no current and the potential is equal to zero.

Hope this helps.

Dr. Romano

thanks for explaining ! I was looking at it all wrong !!

 

[DAT Destroyer]

thanks for explaining ! I was looking at it all wrong !!

Glad I could help!