Question

A. If an aqueous solution is prepared with molality= 4.58 moles of glycerine/100 kg water, calculate...

A. If an aqueous solution is prepared with molality= 4.58 moles of glycerine/100 kg water, calculate the freezing point of the solution. Kf for water = 1.86C/m. (Glycerine is a molecular solute)

b. if an aqueous solution is prepared with molality = 8.21 moles of magnesium chloride/100kg water, calculate the freezing point of the solution. Note : the ionic formula of this salt is MgCl2.

C. Calculate the boiling pointof the solution described in question 2b. Given Kb for water=0.520C/m.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A solution is prepared by mixing 12.0g of unknown electrolyte with 80.0g of water. The solutions...
A solution is prepared by mixing 12.0g of unknown electrolyte with 80.0g of water. The solutions freezes at -1.94C. The freezing point of pure water is 0.0C. the value of Kf for water is 1.86C/m. a) what is the molality of the solution? b)what are the moles of unknown electrolyte in the solution? c)what is the molecular weight of the unknown?
What is the normal boiling point of an aqueous solution that has a freezing point of...
What is the normal boiling point of an aqueous solution that has a freezing point of 1.04 oC. Kf for water 1.86 oC/m (oC-kg/mol). Hint: Calculate the molality from the freezing point depression and use it to calculate the normal boiling point.
Calculate the freezing point and boiling point of aqueous 1.9 m CuCl3 given Kf for water...
Calculate the freezing point and boiling point of aqueous 1.9 m CuCl3 given Kf for water = 1.86 deg.C/m; Kb for water = 0.512 deg C/m. Assume theoretical value for i. Show work for credit.
1.The freezing point of an aqueous solution prepared by adding 0.0100 mol of acetic acid to...
1.The freezing point of an aqueous solution prepared by adding 0.0100 mol of acetic acid to 100. g of water is -0.190 C. The freezing point depression of pure water is 0.000 C, and the freezing point depression constant for water is 1.86 C/m. What is the value for the van't Hoff factor for acetic acid in the aqueous solution. You must show work to support your response. 2. Which of the following aqueous solutions should have the lowest freezing...
The osmotic pressure of an aqueous solution at 300K is 250.0 kPa. (1)Calculate the molarity of...
The osmotic pressure of an aqueous solution at 300K is 250.0 kPa. (1)Calculate the molarity of solute (impurity) M (mol/m3)=; (2) Calculate the molality of solute (impurity) b (mol/kg)=; Calculate the freezing point of the solution T(oC)=. Please pay attention to the sign. The cryoscopicconstant Kf=1.86Kkgmol-1. Please enter your answers with 2 decimals. for example, 3.02466 is written as 3.02.
what is the freezing point of an aqueous 200m (NH4)PO4 salt solution? The Kf of water...
what is the freezing point of an aqueous 200m (NH4)PO4 salt solution? The Kf of water 1.86 C/m. Assume complete dissociation of the soluble salt.
Please answer only if you 100% know and it has to be all of them! Please...
Please answer only if you 100% know and it has to be all of them! Please show work neatly!!! :)Thanks! 1. Calculate the molarity, molality and mass % of NH3 in a solution in which 60.0g of NH3 are dissolved in 140.0g of water. The Density of this solution is 0.982g/mL 2. A solution is prepared by dissolving 38.0g of non-volatile molecular solute in 125 grams of benzene. The boiling point of this solution is 84.5C (Celsius) and the boiling...
A solution contains 221 grams of calcium chloride in 600 millimeters of water. For the solvent...
A solution contains 221 grams of calcium chloride in 600 millimeters of water. For the solvent the Kf is 1.86 and Kb is 0.51. What the should the boiling point and the freezing point of the solution be?
must show all work. Observe sig fig rules and include units. 1) In a lab three...
must show all work. Observe sig fig rules and include units. 1) In a lab three determinations were made for the freezing point of an unknown liquid. The values obtained were: 25.1°C, 25.9°C and 25.4°C. Calculate the average and Standard Deviation. 2) Compound X was dissolved in water. The freezing point of this solution was determined to be -0.072°C. a) Calculate the ΔTf ? (Freezing Point of water is 0.00°C) b) Calculate the molality of the solution? (Kf for water...
A solution is made by dissolving 2.04 g of KBr in 188 g of water. The...
A solution is made by dissolving 2.04 g of KBr in 188 g of water. The kf of water is 1.86 oC/m, the kb of water is 0.51 oC/m. Calculate the freezing point Calculate the boiling point