Can you carbonate a liquid with a 500 ml air tank?

[1683cadder]

I know it seems like a dumb question, but I really need this answered. I am doing a science experiment (google sci fair) that needs carbonic acid, so to make this acid I need to keep the container in as much pressure as possible in order to force more carbon dioxide into solution and therefore make more carbonic acid. I plan to use 100ml of solution and about .1 mol of dry ice. I don't want to use 2 L bottles because they seem too weak. Is it safe to do it in an air tank? I'm not trolling; this is a legitimate question.