When 27.5 g of a certain molecular compound X are dissolved in 90. g of benzonitrile (C6H₂CN), the freezing point of the solution is measured to be - 16.8 °C. Calculate the molar mass of X. If you need any additional information on benzonitrile, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to 2 significant digits.

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When 27.5 of a certain molecular compound X are dissolved in 90. g of benzonitrile (C6H₂CN), the freezing point of the solution is measured to be
- 16.8 °C. Calculate the molar mass of X.
If you need any additional information on benzonitrile, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is
rounded to 2 significant digits.
D
010
X
x10
5
Transcribed Image Text:When 27.5 of a certain molecular compound X are dissolved in 90. g of benzonitrile (C6H₂CN), the freezing point of the solution is measured to be - 16.8 °C. Calculate the molar mass of X. If you need any additional information on benzonitrile, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to 2 significant digits. D 010 X x10 5
Expert Solution
Step 1

Weight of unknown compound X = 27.5 g

Weight of solvent benzonitrile = 90. g

Molar mass of benzonitrile (C6H5CN ) = 12×7+5+14 = 103 g/mol

 

Freezing point of Solution = -16.8 0C

 

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