What is osmotic pressure of solution of 1.7 ~g CaCl ₂ in 1.25 dm ^3 water at 300 ~K if van't Hoff factor and molar mass of CaCl ₂ , are 2.47 and 111 ~g ~mol ⁻¹ respectively? [ R =0.082 dm ^3 atm mol ⁻¹ ~K ⁻¹ ]

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Correct answer: B. 0.744 ~atm

= iMRT = i W ₂ RT M ₂ ~V aligned & = 2.47 1.7 ~g 0.082 dm ^3 ~atm ~mol ~K ⁻¹ 300 ~K 111 ~g ~mol ⁻¹ 1.25 dm ^3 & =0.744 ~atm & aligned

What is osmotic pressure of solution of 1.7 ~g CaCl ₂ in 1.25 dm ^3 water at 300 ~K if van't Hoff factor and molar mass of CaCl ₂ , are 2.47 and 111 ~g ~mol ⁻¹ respectively? [ R =0.082 dm ^3 atm mol ⁻¹ ~K ⁻¹ ]

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