Calculate the concentration of dissolved gas in water at 25^ C if patrial pressure of gas at same temperature is 0.15 atm [K_H=0.15 ~mol~ dm ⁻³ ~atm ⁻¹ ]

Step-by-step solution

Henry's Law states that gas concentration is proportional to partial pressure: C = K_H P_ gas . Given K_H = 0.15 mol dm ⁻³ atm ⁻¹ and P_ gas = 0.15 atm , we calculate: C = 0.15 0.15 = 0.0225 mol dm ⁻³ This corresponds to 0.0225 M, matching option D. Final answer: D