system
Given the following post, respond as if you're commenting on Reddit:
human
What would happen/look like if an alka-selzter was opened up at the deepest known part of the sea? Would the gas behave differently?
gpt
At the bottom of the ocean, the sodium bicarbonate and citric acid in Alka Seltzer would still react to form CO2 and sodium citrate.  The CO2, however, would not remain in gas bubble form, since it is vastly undersaturated at 1100 times atmospheric pressure.  If any bubbles could be seen at the point of reaction, they would quickly dissolve into the water.