nernst equation - USMLE Forums
 USMLE Forums         Your Reliable USMLE Online Community     Members     Posts
 Home USMLE Articles USMLE News USMLE Polls USMLE Books USMLE Apps
 USMLE Forums nernst equation
 User Name Remember Me? Password
 Register FAQs Members List Search Today's Posts Mark Forums Read

 USMLE Step 1 Forum USMLE Step 1 Discussion Forum: Let's talk about anything related to USMLE Step 1 exam

 Thread Tools Search this Thread Display Modes
#1
09-07-2011
 USMLE Forums Addict Steps History: Not yet Posts: 124 Threads: 13 Thanked 60 Times in 43 Posts Reputation: 70
nernst equation

can anybody explain me how to use nernst equation for potentials???????
thanx!!

#2
09-07-2011
 USMLE Forums Scout Steps History: Not yet Posts: 16 Threads: 3 Thanked 12 Times in 7 Posts Reputation: 22

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
__________________
Dr. Pinguin
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
 The above post was thanked by: akua (09-07-2011), riya10 (09-07-2011)
#3
09-07-2011
 USMLE Forums Addict Steps History: Not yet Posts: 124 Threads: 13 Thanked 60 Times in 43 Posts Reputation: 70

Quote:
 Originally Posted by Meli 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

Message:
Options

## Register Now

In order to be able to post messages on the USMLE Forums forums, you must first register.
User Name:
 Please enter a valid email address for yourself. Email Address:
Medical School
Choose "---" if you don't want to tell. AMG for US & Canadian medical schools. IMG for all other medical schools.
 AMG IMG ---
USMLE Steps History
What steps finished! Example: 1+CK+CS+3 = Passed Step 1, Step 2 CK, Step 2 CS, and Step 3.

Choose "---" if you don't want to tell.

 Not yet Step 1 Only CK Only CS Only 1 + CK 1 + CS 1+CK+CS CK+CS 1+CK+CS+3 ---
Favorite USMLE Books
 What USMLE books you really think are useful. Leave blank if you don't want to tell.
Location
 Where you live. Leave blank if you don't want to tell.

## Log-in

 User Name Remember Me? Password
Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

 Thread Tools Search this Thread Search this Thread: Advanced Search Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post INCOGNITO USMLE Step 1 Forum 3 01-30-2013 01:10 PM chienpolska USMLE Step 1 Forum 1 08-17-2011 12:22 PM Tig2575 USMLE Step 1 Forum 1 05-17-2011 07:50 AM fauzan USMLE Step 1 Forum 7 12-30-2009 12:23 PM

 Home - Contact Us - Forum Rules - Advertise - Mobile Site - Archive - Privacy Statement - Top