Is the pool of caustic fluid they use for executing condemned wizards made of "Liquid Death", such as Harry Potter brewed in The Half-blood Prince? It seems to react the same way to matter, burning from the edges in, vaporizing objects.
The answer to that question is kind of both yes and no. Here's why:
The film is based off of the older trials that occurred during the Salem Witch Trials. For example, if they took the women they accused as witches and submerged them in water and they didn't drown, then that meant they were witches.
True. But that stuff wasn't water they were trying to dunk Tina in. It was corrosive. It acted on the wand and the chair that fell into it precisely like Liquid Death. The chair was, however, reminiscent of the "Dunking Chairs" the witch hunters used to "test" for witches. If either of us runs into J.K. Rowling we should ask her.
Yeah; that would have made more sense. The execution room was over-elaborate. Probably just to buy them time to escape. Maybe Graves enjoyed watching the sadistic display whenever he had the chance.
Plus it looked like that liquid was burning up everything it contacted; so they basically are burning people alive? Im pretty sure AK is instant and painless.