Subject: How do I determine the type of an unknown acid?

I found a clear, unlabeled bottle of fluid in my shed.

The smell nearly ripped my lungs out. I figured acid.. 

So I added about 15ml to 200ml of water, the water temperature raised. I 
added about a gram of sodium bicarbonate and it fizzed like all hell. I 
made the solution basic using purple flowers as an indicator and it took a 
hell of a lot of soda.

So now I'm wondering, what kind of acid is it? Is there a test I can 
perform that will determine with any accuracy whether the solution is 
sulphuric or hydrochloric or some other kind of acid? And if so, is there 
a way to determine concentration.

Re: How do I determine the type of an unknown acid?