QUESTION 11 Determine the molal concentration of a sugar solution in water that has a freezing...
Determine the freezing point of a 0.966 molal solution of ethanol. The normal freezing point of ethanol is -114.6oC and has Kf = 1.99 oC/m. Answer to 1 decimal place. Units are not required.
an aqueous solution is 0.4742 molal in calcium chloride. it has a freezing point of -2.345 degrees C. determine the effective number of particles arising from each CaCl2 formula unit in this solution. For water, Kfp=1.86 degrees C/m.
8. Which aqueous solution will have the lowest freezing point? A) 0.60 molal sucrose B) 0.50 molal KF C) 0.60 molal glucose D) 0.24 molal Fel3 9, If "A" contains 2% NaCl and is separated by a semipermeable membrane occur? A) NaCI will flow from "A" to "B". B) NaCI will flow from "B" to "A". C) Water will flow from "A" to "B". D) Water will flow from "B" to "A". E) none of the above from "B which...
Calculate the freezing point of a solution that contains 68.4 g of sucrose (table sugar, 342 g/mol) in 300. g of water. One mole of sucrose is 342 g. Kf for H2O = 1.86°C/m.
Which of the following aqueous solutions has the lowest freezing point? The Kf of water is 1.86 kg.oC/mol. a. 0.8 m CH3OH (methanol) b. 0.4 m NaCl c. 0.3 m MgBr2 d. 0.2 m AlF3 e. 0.25 m Ca(NO3)2 Calculate the freezing point ONLY for the solution you marked as your answer above.
8. What is the final boiling point of a 1.25 molal solution of sugar in water? The Kb for water is 0.512 C/m. (For sugar i = l.) 9. A solution was prepared by dissolving 0.52 mol hexane into 400g CCl4. What is the change in freezing point of this solution? Carbon tetrachloride has a freezing point depression constant of 29.8 Cm,and freezes at-23。. 10. A solution was prepared by dissolving 0.26 moles of ethanol (C2HsOH) into 750g Diethyl ether....
Suppose that we dissolve enough sugar in 100.0 g H2O to cause the solution to have a freezing point of -3.20°C. How many grams of water must we add to the solution so that the freezing point will be - 1.00°C? For water, Kf = 1.86°C/m.
What is the expected freezing point of a 0.0750 m solution of LiBr in water? (Kf for water is 1.86 °C/m.)
The experimentally measured freezing point of a 1.50 m aqueous solution of CaCl2 is -6.70°C. The freezing point depression constant for water is Kf = 1.86°C/m. Assume the freezing point of pure water is 0.00°C. The experimentally measured freezing point of a 1.50 m aqueous solution of CaCl2 is -6.70°C. The freezing point depression constant for water is Kf = 1.86°C/m. Assume the freezing point of pure water is 0.00°C. What is the predicted freezing point if there were no...
Calculate the boiling point of a solution of CaCl2 in water. The freezing point depression of the same solution is -1.420 °C (kf = 1.86 °c/m, kb = 0.52°C/m).