If you were to sit in a bathtub filled with carbon dioxide (CO2), a few things would occur:
Displacement of Oxygen: Carbon dioxide is a gas that is denser than air. When it fills the bathtub, it would displace the air and, consequently, reduce the concentration of oxygen in the immediate surroundings. Oxygen is necessary for sustaining human life, so a significant reduction in oxygen levels can be dangerous.
Difficulty Breathing: Carbon dioxide is an asphyxiant, meaning it can cause suffocation by displacing oxygen. Breathing in an environment with high levels of carbon dioxide can lead to breathing difficulties, shortness of breath, dizziness, and potentially loss of consciousness.
Acidic Conditions: Carbon dioxide dissolves in water, forming carbonic acid. When you sit in a bathtub filled with carbon dioxide, the gas would dissolve in the water, resulting in the formation of carbonic acid. This acid can cause irritation to the skin, eyes, and mucous membranes.
Cold Sensation: Carbon dioxide evaporates at a temperature of -78.5 degrees Celsius (-109.3 degrees Fahrenheit) at atmospheric pressure. Therefore, the presence of carbon dioxide in the bathtub would likely cause a significant drop in temperature, leading to a cold sensation and discomfort.
It is important to note that sitting in a bathtub filled with carbon dioxide would be extremely dangerous and potentially life-threatening. Carbon dioxide is an asphyxiant and can displace oxygen in the air, leading to suffocation. It should never be attempted as it poses significant risks to health and safety.