Identifying the type of the equation

[Zack K]

Homework Statement

Match the type of equation to the following.
2Al(s) + 6Br−(aq) + 6H+(aq) → 2Al3+(aq) + 6Br−(aq) + 3H2(g)
2Al(s) + 6HBr(aq) → 2Al3+(aq) + 6Br−(aq) + 3H2(g)
2Al(s) + 6HBr(aq) → 2AlBr3(aq) + 3H2(g)
2Al(s) + 6H+(aq) → 2Al3+(aq) + 3H2(g)

Homework Equations

The Attempt at a Solution

The first one is obviously ionic since all the aqueous solutions are split up into their ions
The second one is the one confusing, since The aqueous product is split into it's ions, but HBr isn't. I have no idea what it is.
The third one is a molecular equation
the fourth one looks to be a net ionic equation.

 

[symbolipoint]

They all look like oxidation-reduction. Each starts with reduced metal aluminum and become ionic aluminum ions or compounds.

 

[Borek]

Yep, second one defies simple classification attempts.