6. A solution prepared from 0.3 g of an unknown nonvolatile solute and 30 g CC14 has a boiling point of 0.392 °C higher than that pure CC14. What is the molecular weight of the solute?

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NOTE: please base the value of boiling and freezing point, and Kb on the given table.
Table 13.6 Molal Boiling Point Elevation and Freezing Point
Depression Constants of Several Solvents
solvent
acetic acid
benzene
carbon disulfide
carbon tetrachloride
chloroform
diethyl ether
ethanol
water
*at 1 atm.
boiling
point (OC)*
117.9
80.1
46.2
76.5
61.7
34.5
78.5
100.0
Kb (oC/m)
3.07
2.53
2.34
5.03
3.63
2.02
1.22
0.512
melting
point (OC)
16.6
5.5
-111.5
-23
-63.5
-116.2
-117.3
0.0
Kf (oC/m)
3.90
4.90
3.83
30.
4.70
1.79
1.99
1.86
Transcribed Image Text:Table 13.6 Molal Boiling Point Elevation and Freezing Point Depression Constants of Several Solvents solvent acetic acid benzene carbon disulfide carbon tetrachloride chloroform diethyl ether ethanol water *at 1 atm. boiling point (OC)* 117.9 80.1 46.2 76.5 61.7 34.5 78.5 100.0 Kb (oC/m) 3.07 2.53 2.34 5.03 3.63 2.02 1.22 0.512 melting point (OC) 16.6 5.5 -111.5 -23 -63.5 -116.2 -117.3 0.0 Kf (oC/m) 3.90 4.90 3.83 30. 4.70 1.79 1.99 1.86
6. A solution prepared from 0.3 g of an unknown nonvolatile
solute and 30 g CC14 has a boiling point of 0.392 °C higher than
that pure CC14. What is the molecular weight of the solute?
Transcribed Image Text:6. A solution prepared from 0.3 g of an unknown nonvolatile solute and 30 g CC14 has a boiling point of 0.392 °C higher than that pure CC14. What is the molecular weight of the solute?
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