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can you please check my work for question #1; thank you Unkmown: F36 SolidOrganicSolventSolidOrganicSolventwithUnknownTrials#1#2Mass(g)15.985g2.052gInitialTemperature(C)89.5C89.0CTemperature(C)43.8C56.5CFinalTemperature(C)43.6C37.5C a) Solid Organic Solvent T=imKfm=iKfT=(1)(4.53mC)45.9C=10.13245033m=T=TfTi=43.6C89.5C=45.9C b) Solid Organic Solvent with Unknown
can you please check my work for question #1; thank you
Unkmown: F36 SolidOrganicSolventSolidOrganicSolventwithUnknownTrials#1#2Mass(g)15.985g2.052gInitialTemperature(C)89.5C89.0CTemperature(C)43.8C56.5CFinalTemperature(C)43.6C37.5C a) Solid Organic Solvent T=imKfm=iKfT=(1)(4.53mC)45.9C=10.13245033m=T=TfTi=43.6C89.5C=45.9C b) Solid Organic Solvent with Unknown T=imKfm=iKfT=(1)(4.53mC)51.5C=11.36865342m=T=TTi=37.5C89.0C=51.5C You will repeat this process after dissolving your unknown in the solid solvent. Here your unknown is the solute. The equation that describes how much the freezing point is lowered is given by: T=imKF(Equation1) Here T is the change in freezing point (TFTi) on C. KF is called the freezing point lowering constant. KF=4.53C/m for your solid organic solvent. Here m is the molality of the solution and i is the van't Hoff factor. Because your unknowns are all molecular, i=1 m=kilogramsofsolventmolesofsolute(Equation2) You will measure or be given everything in Equations 1 and 2 except for the moles of the solute (your unknown). You will solve Equation 1 for the molality, m, of your solution. You will then solve Equation 2 for the moles of your unknown in the solution. The molar mass of your unknown is just the mass of your unknown divided by the moles of your unknown. Calculations: 1.) Find Tr for your experiment using the two freezing points you found in the experiment. 2.) Find the molality of your solution with your unknown dissolved in your solid organic Step by Step Solution
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