When 1.78 g of a certain molecular compound X are dissolved in 85. g ofdibenzyl ether ((C,H;CH,),0), the freezing point of the solution is measuredto be 0.9 °C. Calculate the molar mass of x.If you need any additional information on dibenzyl ether, use only whatyou find in the ALEKS Data resource. Also, be sure your answer has aunit symbol, and is rounded to the correct number of significant digits.미 molal freezing pointdepression constant(Kf)molal boiling pointelevation constant(К»)°C-kg-mol1chemicalformulameltingpoint (Tm)boilingpoint (Tp)name°C°C°C-kg-mol1acetic acidCH3CO2H17.0117.93.633.22benzeneC6H65.53880.085.072.64benzonitrileC6H5CN-12.821915.35carbondisulfideCS2-111.746.22.42carbontetrachlorideCCI476.75.26-22.8cyclohexaneC6H126.780.720.82.92dibenzyl ether(CGH5CH2)201.82986.172.2diethyl etherCH3CH20CH2CH3-116.2234.4ethanolCH3CH2OH-114.1478.241.23ethyleneglycol(CH2OH)2-13.0197.53.112.26formamideNH2COH2.572174.252.9hexaneC6H14-95.2768.722.9methanolCH3OH-97.564.580.222187.45naphthaleneC10H899.9741.860.513waterH20

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When 1.78 of a certain molecular compound X are dissolved in 85. g Oof g dibenzyl ether ((C,H,CH,),0), the freezing point of the solution is measured to be 0.9 °C. Calculate the molar mass of x.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

When 1.78 g of a certain molecular compound X are dissolved in 85. g of
dibenzyl ether ((C,H;CH,),0), the freezing point of the solution is measured
to be 0.9 °C. Calculate the molar mass of x.
If you need any additional information on dibenzyl ether, use only what
you find in the ALEKS Data resource. Also, be sure your answer has a
unit symbol, and is rounded to the correct number of significant digits.
미

molal freezing point
depression constant
(Kf)
molal boiling point
elevation constant
(К»)
°C-kg-mol1
chemical
formula
melting
point (Tm)
boiling
point (Tp)
name
°C
°C
°C-kg-mol1
acetic acid
CH3CO2H
17.0
117.9
3.63
3.22
benzene
C6H6
5.538
80.08
5.07
2.64
benzonitrile
C6H5CN
-12.82
191
5.35
carbon
disulfide
CS2
-111.7
46.2
2.42
carbon
tetrachloride
CCI4
76.7
5.26
-22.8
cyclohexane
C6H12
6.7
80.7
20.8
2.92
dibenzyl ether
(CGH5CH2)20
1.8
298
6.17
2.2
diethyl ether
CH3CH20CH2CH3
-116.22
34.4
ethanol
CH3CH2OH
-114.14
78.24
1.23
ethylene
glycol
(CH2OH)2
-13.0
197.5
3.11
2.26
formamide
NH2COH
2.57
217
4.25
2.9
hexane
C6H14
-95.27
68.72
2.9
methanol
CH3OH
-97.5
64.5
80.22
218
7.45
naphthalene
C10H8
99.974
1.86
0.513
water
H20

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