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The osmotic pressure of an unknown substance dissolved in 100 mL of water is measured at...

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Chemistry

The osmotic pressure of an unknown substance dissolvedin 100 mL of water is measured at 298 K. The concentration of thissubstance is 25.5 kg m–3 and the osmotic pressure is 4.50 x 104 Pa.a) Determine the molecular weight of this substance. b) Calculatethe change in the freezing point of water caused by the addition ofthis substance. (Keep in mind that the density of a dilute aqueoussolution is approximately 1 g/mL).

Answer & Explanation Solved by verified expert
3.6 Ratings (394 Votes)
Hi the Finding of molecular wieght of unknow substance withgiven wieght can be done using VontHoff Osmatic pressureformulaCST Osmatic pressure atm C concentration of    See Answer
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