Question

Draw the structure for the ammonium ion formed by the following amine reacting with an acid.

Answer 1

remember amines, can act as bases, they can be protonated, if they have a lone pair of electrons available. ammonium ion means NH4+ or with a positive charge on nitrogen

Answer 2

Just by glance, you'd protonate the amine group and form two products, the methylamine and the ring.

Answer 3

I might even guess there's a proton rearrangement.