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Boiling Point Elevation

Q. 30.2 g of glycerine (C3H8O3) are dissolved in 150 g of water. What is the boiling point of the solution? (Kb of water = 0.512 degrees C/m) 1. 1.13 degrees C 2. 100.10 degrees C 3. 101.13 degrees C 4. 103.52 degrees 5. 0.104 degrees C

Solved • Sep 17, 2019

Boiling Point Elevation

Q. The boiling point of ethanol (C2H5OH) is 78.5 degrees C. What is the boiling point of a solution of 14.2 g of vanillin (M = 152.14 g/mol) in 50.0 g of ethanol (Kb of ethanol = 1.22 degrees C/m)?

Solved • Sep 14, 2019

Boiling Point Elevation

Q. MgCl₂ has a van't Hoff factor of 2.70. What would be the boiling point of an aqueous solution containing 3.70 mol of MgCl₂ in 1.00 kg of water? (Kb for water is 0.51 °C/m)

Solved • Sep 8, 2019

Boiling Point Elevation

Q. When 9.36 g of an unknown non-electrolyte is dissolved in 50.0 g of acetone, the boiling point increased to 60.1 degrees C from 56.2 degrees C. If the Kbp of the solvent is 1.71 K/m, calculate the molar mass of the unknown solute.

Solved • Sep 4, 2019

Boiling Point Elevation

Q. The boiling point of water is 100.00 degrees C at 1 atmosphere. A student dissolves 11.67 grams of barium nitrate, Ba(NO3)2 (261.4 g/mol), in 281.6 grams of water. use the table of boiling and freezing point constants to answer questions below. The molality of the solution is ____ m. The boiling point of the solution is ____ degrees C.

Solved • Aug 30, 2019

Boiling Point Elevation

Q. The boiling point of water is 100.0 degrees C at 1 atmosphere. How many grams of iron(II) acetate (174.0 g/mol), must be dissolved in 278.0 grams of water to raise the boiling point by 0.350 degrees C? refer to the table for the necessary boiling or freezing point constant. ____ g iron(II) acetate

Solved • Aug 30, 2019

Boiling Point Elevation

Q. The boiling point of chloroform CHCl3 is 61.70 degrees C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in chloroform is testosterone. How many grams of testosterone, C19H28O2 (288.4 g/mol), must be dissolved in 263.0 grams of chloroform to raise the boiling point by 0.450 degrees C? refer to the table for the necessary boiling and freezing point constant. ____ g testoterone

Solved • Aug 30, 2019