(Solved) Nerst Potential question?

dashaalynn

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11 years ago

I am studying for an upcoming exam and don't really understand this equation. The nerst potential equation is E(ion)=61/z(log)(ion in/ion out). The question is asking me for the nerst potential of Na+ and gives me the following information:

Intracellular(mmol)= 14
ECF(mmol)=140

I have no idea how to incorporate this information into the equation. If anyone could help please show work since I have more than one question related to this. Thanks!
I meant Nernst** sorry!

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dbb868

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11 years ago

for Na+ it is [140]/[14] plug that into the equation for ion in and ion out and you should get the right answer Slight Smile

Good Luck

sorry I am in lecture right now... ill add more in a bit so it makes more sence

Ok from what i have from my lecture notes is that the portion of the eqn 61/z is a constant and it equals 60. So now you have to consider the whats going on, whats ICF and ECF and which is higher and lower depending on if its k+ or Na+ Cl- and then you can think through which way the numbers should be larger/smaller in the ICF or ECF. I hope that helps a little more, if not sorry Confounded Face

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freddy0622

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11 years ago

This verified answer contains over 190 words.

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Nerst Potential question?

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