Umm about the one dumping the body in a barrel full of acid? Nope thats not effective cause the bones will not corrode and if then the acid is strong, the container itself will be corroded, which is a bad thing. What I'd recommend is put the corpse in a freezer until it doesn't smell and put it in a trash bag and go to the nearest recycling center. There should be a crusher cause thats where youll be dumping it. If you don't want to do the above, try going to a forest, preferably haunted to prevent as much people going and knowing what happened there as much as possible.
i found a nice spot last week...large rocky narrow crevice i could see from the top of a wooded cliff
Watch Breaking Bad. Walt tells you what kind of plastic container to buy, and what kind or acid to use. And he's right. If there was a weapon, put it in with the body. If anyone figured out what you've done, put him or her in with the body. Bleach the crime scene. Febreeze the crime scene. Use the kind with Gain. It is less suspicious to smell of fresh laundry than of bleach when he deceased is finally missed. Alternately, ditch it in the Everglades? Australian outback? Toss it into a volcano? Did I ever tell you about my recipe for smoked leg of...um...lamb?
lol, although I think Mythbusters tried the Walter White / Heisenberg method and... it didn't work quite as well as in the programme...