Concept:Solubility of a gas depends on pressure, temperature, and the nature of the solvent, not on the amount already dissolved.
Explanation:Pressure affects gas solubility because higher pressure forces more gas molecules into the solution.
Temperature affects solubility, and gases generally become less soluble as temperature increases.
The nature of solvent affects solubility because different solvents interact differently with gas molecules.
Concentration only tells how much solute is already present and does not change the solubility limit itself.
Therefore, concentration is the factor that would not affect the solubility of a gas.
Answer:A. Concentration