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Guitar Most visited Facebook Beadwork Scholarships M GMail College Recipes E Red Lobster e 12/8/2015 11:00 PM A 80.8/100 Grad Print Calculator Periodic Table Question 6 of 65 Map A A. Calculate the free energy for transporting Ca across a membrane from a concentration of 10.0 mM (on 2+ side 1) to a concentration of 1.00 mM (on side 2). The temperature is 25 oC and the membrane potential AD is 0.0 The Faraday constant is 96.5 kJ V mol and the gas constant is 8.314x10 3 mol '.K1 kJ Number AG kJ mol B. Calculate the free energy for transporting Ca across a membrane in part A. when the membrane potential is +0.100 V (more positive on side 2 than on side 1). Number Continued below- parts C. and D. kJ mol C. Which transport is more favorable, A. or B.? O A. is more favorable O B. is more favorable O A. and B. are equally favorable Continued below-part D D. Which transport would require active transport? O Previous ® Give Up & View Solution Check Answer Next Ext Hint

Explanation / Answer

E= E0 - (0.059/n) log Q

Assuming n=1

A) 0.0= E0 - (0.059) log (1/10)

E0= 0.0-0.059 = -0.059 V

So, delta G0= -nFE0= -96.5 kJ/Vmol* (-0.059 V) = + 5.69 kJ/mol

B) 0.1 V= E0 - (0.059) log (1/10)

E0= 0.1-0.059 = 0.041 V

So, delta G0= -nFE0= -96.5 kJ/Vmol*0.041 V = - 3.95 kJ/mol

C) B is more favorable since a -ve Gibbs free energy indicates spontanity of a process.

D) Transport B will be an active transport, but transport A will require external energy to carry out the process.

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