According to the Nernst equation, the equilibrium potential for any ion (E ion)

Question

According to the Nernst equation, the equilibrium potential for any ion (E ion) distributed across a membrane is dependent on the internal (Ion in) and external (Ion out) concentrations of the ion (in moles or grams/liter), the valence of the ion, z (an integer), the absolute temperature (degrees kelvin (K)), Faraday's constant (96,500 coulombs/mole) and the unisersal gas constnt R according to the following relationship:

E ion = (RK/zF)2.303 log ([Ion]out / [Ion]in)

Assumng that the equilibrium potential for sodium ion across a skeletal muscle is +66 mv at a temperature of 37 degrees celcius when the external concentration is 145 mM and the internal concentration is 12 mM, evaluate both the magnitude and the appropriate units for the universal gas constant R.

Explanation / Answer

R PROPORTIONAL TO F/K =coloumb/(mole kelvin) is answer

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