Vitamin K is involved in normal blood clotting.When 2.19 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 7.33 °C. Look upthe freezing point and Kf constant for camphor in the Colligative Constants table.Calculate the molar mass of vitamin K.molar mass:g/mol Colligative ConstantsConstants for freezing-point depression and boiling-point elevation calculations at 1 atm:Formula K, value* Normal freezing K, value Normal boilingpoint (°C)Solvent(°C/m)(°C/m)point (°C)waterH201.860.000.512100.00benzeneC6H65.125.492.5380.1cyclohexane C6H1220.86.592.9280.7ethanol-117.3C2H60CCIA1.991.2278.4carbon29.8-22.95.0376.8tetrachloridecamphorC10H160 37.8176

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Asked Feb 26, 2020
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Vitamin K is involved in normal blood clotting.
When 2.19 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 7.33 °C. Look up
the freezing point and Kf constant for camphor in the Colligative Constants table.
Calculate the molar mass of vitamin K.
molar mass:
g/mol
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Vitamin K is involved in normal blood clotting. When 2.19 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 7.33 °C. Look up the freezing point and Kf constant for camphor in the Colligative Constants table. Calculate the molar mass of vitamin K. molar mass: g/mol

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Colligative Constants
Constants for freezing-point depression and boiling-point elevation calculations at 1 atm:
Formula K, value* Normal freezing K, value Normal boiling
point (°C)
Solvent
(°C/m)
(°C/m)
point (°C)
water
H20
1.86
0.00
0.512
100.00
benzene
C6H6
5.12
5.49
2.53
80.1
cyclohexane C6H12
20.8
6.59
2.92
80.7
ethanol
-117.3
C2H60
CCIA
1.99
1.22
78.4
carbon
29.8
-22.9
5.03
76.8
tetrachloride
camphor
C10H160 37.8
176
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Colligative Constants Constants for freezing-point depression and boiling-point elevation calculations at 1 atm: Formula K, value* Normal freezing K, value Normal boiling point (°C) Solvent (°C/m) (°C/m) point (°C) water H20 1.86 0.00 0.512 100.00 benzene C6H6 5.12 5.49 2.53 80.1 cyclohexane C6H12 20.8 6.59 2.92 80.7 ethanol -117.3 C2H60 CCIA 1.99 1.22 78.4 carbon 29.8 -22.9 5.03 76.8 tetrachloride camphor C10H160 37.8 176

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Expert Answer

Step 1

Depression or lowering in freezing point is one of the colligative properties of a solution which depends upon the intermolecular attractive forces between solvent molecules. The expression for lowering in freezing point is given below.

Chemistry homework question answer, step 1, image 1

Where, i is known as van’t Hoff factor and it is the total number of ions or solute particles of an electrolyte produced when it dissolves in a solution. kf is the freezing point depression constant, m i...

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