I tried throwing an acid bomb on a skeletal juggernaut with little effect. So I tried using it on an ordinary zombie in debug mode. It took several turns of walking around in the acid pool for my test subject to die. Also, unlike a player stepping in an acid pool, it seems like a monster stops receiving acid damage as soon as it exist the pool.
I think I’ll stick with molotov cocktails for killing skeletal and kevlar zombies.