I swear, I have the worst luck when it comes to dissolve.

Drow Slave Pits

You are standing in a giant slave pit.
Obvious exits: west, southeast.
You see 368 gold coins, a cage.

(161 H 68 M 1,394,970X): You get 368 gold coins.
You now have 26537 gold pieces.
(161 H 68 M 1,394,970X): You attempt to hide in the shadows.
You slip into the shadows unnoticed.
(161 H 68 M 1,394,970X): A berserking demon just arrived.
(161 H 68 M 1,394,970X): You have become unhidden.
You ambush the berserking demon!
You gutted the berserking demon for 38 damage.
You viciously whipped the berserking demon for 30 damage.
(161 H 68 M 1,394,970X): Please wait 1.4 more seconds.
(161 H 68 M 1,394,970X): The berserking demon tried to bash you.
You deftly dodge the berserking demon's attack.
(161 H 68 M 1,394,970X): Please wait 0.7 more seconds.
(161 H 68 M 1,394,970X): You gutted the berserking demon for 28 damage.
You viciously whipped the berserking demon for 22 damage.
(161 H 68 M 1,394,970X): Please wait 2.8 more seconds.
(161 H 68 M 1,394,970X): Please wait 0.2 more seconds.
(161 H 68 M 1,394,970X): You easily duck under the berserking demon's pitifully executed attack.
(161 H 68 M 1,394,970X): You gutted the berserking demon for 31 damage.
You viciously whipped the berserking demon for 22 damage.
Your practice pays off, you have become better at Whips!
(161 H 68 M 1,394,970X): Please wait 0.1 more seconds.
(161 H 68 M 1,394,970X): CRITICAL hit!
You gutted the berserking demon for 105 damage.
You viciously whipped the berserking demon for 22 damage.
(161 H 68 M 1,394,970X): Please wait 2.9 more seconds.
(161 H 68 M 1,394,970X): Please wait 2.7 more seconds.
The berserking demon goes berserk!
You dove to the side, only being partially hit!
Your shifting mask was dissolved by acid!
Your bag of holding is dissolved by acid!
Your bag of holding is dissolved by acid!
The berserking demon spits acid on you!
You take 13 damage!
(148 H 68 M 1,394,970X): Please wait 0.5 more seconds.
(148 H 68 M 1,394,970X): You slashed the berserking demon for 27 damage.
You viciously whipped the berserking demon for 21 damage.
You killed the berserking demon.
You gain 1512 experience for the death of the berserking demon.

Haha, I thought that if you saved the acid spit, then you don't get dissolved. Guess not :P