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79 solutions

Freezing Point Depression

Q. calculate the freezing point of a 100.ml of 0.29 M CaCl2 aqueous solution, assuming it dissociates completely to form ions in solution with a density of 1.12 g/ml

Solved • Feb 19, 2020

Freezing Point Depression

Q. Assume that you have a solution of an unknown solute in cyclohexane. If the solution has a freezing point depression of 9.50 ∘C, what is the molality of this solution? (The molal freezing-point constant of cyclohexane is 20.2 ∘C/m.)

Solved • Feb 18, 2020

Freezing Point Depression

Q. Which of the following solutions will have the lowest freezing point? Input the appropriate letter. A. 35.0 g of C3H8O in 250.0 g of ethanol (C2H5OH) B. 35.0 g of C4H10O in 250.0 g of ethanol (C2H5OH) C. 35.0 g of C2H6O2 in 250.0 g of ethanol (C2H5OH)

Solved • Feb 17, 2020

Freezing Point Depression

Q. For benzene, C6H6, the freezing point constant, Kf, is 5.12 °C/m and its normal freezing point is 5.5 °C. What is the freezing point of a solution (in °C) containing 225 g of benzene and 31.0 g of naphthalene (C10H8)?

Solved • Feb 17, 2020

Freezing Point Depression

Q. How many grams of ethylene glycol, C2H4(OH)2, are needed per kilogram of water to protect radiator fluid against freezing down to -17°C?

Solved • Feb 17, 2020

Freezing Point Depression

Q. When 1.54 g of an unknown non-electrolyte is dissolved in 50. g of acetone, the freezing point decreased by 1.19 degrees C. If the Kfp of the solvent is 2.4 K/m, calculate the molar mass of the unknown solute.

Solved • Feb 14, 2020

Freezing Point Depression

Q. How many grams of methyl alcohol per kilogram of water in your car radiator is needed to give equal protection against freezing down to -10 celsius? Methyl Alcohol = CH3OH B.P. 64.6 Celsius

Solved • Feb 11, 2020