Final answer:
The solubility of CO₂ in soda water at 25°C is 0.238 M.
Step-by-step explanation:
In order to determine the solubility of CO₂ in soda water at 25°C, we can use Henry's Law. Henry's Law states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid.
The formula for Henry's Law is:
Solubility = Henry's Law constant * Pressure
Given that the pressure of CO₂ is 7.0 atm and the Henry's Law constant for carbon dioxide in water at 25°C is 3.4 × 10⁻² m/atm, we can calculate the solubility:
Solubility = (3.4 × 10⁻² m/atm) * (7.0 atm) = 0.238 M
Therefore, the solubility of CO₂ in soda water at 25°C is 0.238 M.