Niggling Question regarding spontaneous reactions

[destain]

1) Use the electrochemical series to predict whether a spontaneous reaction will occur for each situation below. Write an overall equation where appropriate.
a) Some iron solids are placed in HCL solution.

My answer: So there WILL be a reaction. However when i quickly glanced at the electrochemical series, I just wrote down the first 2H+ that I noticed which was an oxidant, but later i realised that there are 2 sets of 2H+ as an oxidant and it looks to me as if they are both possible answers? So, are there two answers or one?
I saw the H2O2 one first..

[charmanderp]

Only one of those equations containing H+ as an oxidant involves the species you've listed above though; Fe(s), H+, Cl- and H2O.  The others all require the presence of sulfur, oxygen or hydrogen peroxide, from memory, so only reaction with an E° value of 0.00 will actually occur.

So the overall equation is: Fe(s) + 2H+(aq) --> Fe2+(aq) + H2(g)

[destain]

I kinda get it...slightly but then when i look at it, i see 2H+ and a few have 2H+ as an oxidant, which is higher up in the table than Fe solid, so how exactly do we determine which is the right one?
Is it because the other equations have other stuff in it and the equation at E 0.00 has nothing but 2H+? And therefore thats the right answer?

[charmanderp]

Yup. After all, how could it possibly be the one with hydrogen peroxide when hydrogen peroxide isn't present?

[destain]

Idk, i'm pretty fried, and the Cl-, nothing happens with that yeah,  it's on the right

[charmanderp]

That's right, unless you can find an oxidant which is stronger than Cl2, of which there are few.

[charmanderp]

Ok wow, I do not remember posting in here. This is what happens when you don't sleep for 48 hours. Anyway, what I should have said is:

Only one of those equations containing H+ as an oxidant involves species which you've listed above though; H+(aq) H2O(l).  The others all require the presence of sulfur, oxygen or hydrogen peroxide, from memory, so only the reaction with an E° value of 0.00 will actually occur.

So the overall equation is: Fe(s) + 2H+(aq) --> Fe2+(aq) + H2(g)