Calculate osmotic pressure of 0.1 M aqueous solution of an electrolyte at 300 K if van't Hoff factor is 1 125 . [ R =0.0821 ~atm dm ^3 ~K ⁻¹ ~mol ⁻¹ ]

Step-by-step solution

The osmotic pressure of an electrolyte solution is given by = iCRT , where i = 1.125 is the van't Hoff factor, C = 0.1 M is the molar concentration, R = 0.0821 atm dm ^3 K ⁻¹ mol ⁻¹ is the gas constant, and T = 300 K is the temperature. Substitution yields = 1.125 0.1 0.0821 300 = 2.770875 atm . Rounding to two decimal places, 2.77 atm , which corresponds to option C .