Determine the molar mass of the solute. If 2.35 g of the unknown compound were dissolved in 30.46 g of PDB ( Kfp for PDB = 7.10 C/m)
m=molality = moles solute/kg solvent Molar mass= grams of substance/mole of substance
1. Molar mass of solute is___________
On this molar mass calculation in a freezing point depression experiment determine the effect on molar mass, will it be higher, lower, or not change.
2. The thermometer you were using read temperatures consistently 1.2 C higher than the real temperatures. Effect on molar mass ??
3. You knowingly added 3 g of unknown solute during your freezing point determination instead of 2 g. Effect on molar mass ??
4. In Adding your unknown solute to your solvent, you spilled some solute onto the table after weighing. Effect on molar mass ??
Explain all 3
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