00:01
So in this video we're going to talk about question 98 from chapter 20, which says standard reduction potentials for some important biological reactions are given in table 20 .2.
00:11
Will nad plus oxidize f .e2 plus to f .e3 plus explain your answer.
00:17
So let's go ahead and write down the half reaction for the reduction of nad plus, since if nad plus is acting as the oxidizing agent, then it's being reduced.
00:28
So we have nad plus plus h plus plus two electrons forms nadh, and the reduction potential for that half reaction is negative 0 .32 volts.
00:41
On the other hand, we have the oxidation of fe2 plus to fe3 plus.
00:46
So that's when fe2 plus loses an electron to form fe3 plus.
00:52
So this is an oxidation half reaction, meaning we're writing it in the reverse of the way it appears in table 20 .2.
01:01
So we're going to flip the sign on the reduction potential that appears in table 20 .2...