MHT CET20239 May 2023Evening ShiftChemistrySolutionsActual
A solution of 8 ~g of certain organic compound in 2 dm ^3 water develops osmotic pressure 0.6 ~atm at 300 ~K . Calculate the molar mass of compound. [ R =0.082 ~atm dm ^3 ~K ⁻¹ ~mol ⁻¹ ]
Options
- A148 ~g ~mol ⁻¹
- B164 ~g ~mol ⁻¹
- C172 ~g ~mol ⁻¹
- D180 ~g ~mol ⁻¹
Correct answer
B. 164 ~g ~mol ⁻¹
Step-by-step solution
aligned & = W ₂ RT M ₂ ~V M ₂ & = W ₂ RT V M ₂ & = 8 ~g 0.082 dm ^3 ~atm ~K ⁻¹ ~mol ⁻¹ 300 ~K 0.6 ~atm 2 dm ^3 & =164 ~g ~mol ⁻¹ aligned