Nope. That sounds right. The more positive E value would be the one that gets reduced easily. In this case, sodium gets oxidized easily (flip the equation, sodium would have a value of +3.07)
Thanks! There seem to be a couple of mistakes on princeton's amplifire and some one of the aamc tests has a method for Hardy Weinberg calculations that is contradicting the Princeton method. What a time to start having problems eh? My MCAT is tomorrow.