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nernst equation

2K views 2 replies 2 participants last post by  riya10 
#1 ·
can anybody explain me how to use nernst equation for potentials???????:confused::confused::confused:
thanx!!
 
#2 ·
Nerst equation is for calculating how much potential you need to stop the diffusion of any given ion through a membrane.

Example: you got high sodium (Na, a positive ion) in the extra-cellular fluid and low sodium inside of the cell, a gradient forms because of the concentration difference and Na goes inside the cell but there is a moment where the inside of the cell is so positive that the charge repels the Na ions even if there is a still a concentration difference

hope I helped
 
#3 ·
Nerst equation is for calculating how much potential you need to stop the diffusion of any given ion through a membrane.

Example: you got high sodium (Na, a positive ion) in the extra-cellular fluid and low sodium inside of the cell, a gradient forms because of the concentration difference and Na goes inside the cell but there is a moment where the inside of the cell is so positive that the charge repels the Na ions even if there is a still a concentration difference

hope I helped
thanx meli!!!! i got what you said. i have confusion with equation, how to calculate potential by nrst equation??????
ex...Ex=.60/z log10 [NA]out/[NA]out....
thanx
 
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