A certain nonvolatile hydrocarbon that weighed 1.00 g was dissolved in 50.00 g of benzene. The resulting solution was boiled at 0.285 °C higher than the boiling point of pure benzene which boils at 80.1°C. Find the molar mass of the hydrocarbon. (Hint: See Table 1 for given constant.)

A certain nonvolatile hydrocarbon that weighed 1.00 g was dissolved in 50.00 g of benzene. The resulting solution was boiled at 0.285 °C higher than the boiling point of pure benzene which boils at 80.1°C. Find the molar mass of the hydrocarbon. (Hint: See Table 1 for given constant.)

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

Problem Solving:
1. A solution is made of 2.00 g of sucrose, C12H22011, in water, H20. The molar
mass (MM) of sucrose is 342 g/mol. Calculate the (a) boiling point and (h)
freezing point of the solution. (Hint: See Table 1 for given constants.)
2. A certain nonvolatile hydrocarbon that weighed 1.00 g was dissolved in
50.00 g of benzene. The resulting solution was boiled at 0.285 °C higher
than the boiling point of pure benzene which boils at 80.1°C. Find the molar
mass of the hydrocarbon. (Hint: See Table 1 for given constant.)
14

Table 1. Molal Freezing Point and Boiling Point Constants
Freezing Point
(C)
Solvent
Formula
Bolling Point
(*C)
(C/molal)
(c/molal)
Water
H20
0.0
1.86
100.0
0.51
Acetic acid CH:COOH 17.0
3.90
118.1
3.07
Benzene
5.5
4.90
80.2.
2.53
Chloroform CHC3
-63.5
4.68
61.2
3.63
Ethanol
C2H5OH
114.7
1.99
78.
78.4
1.22
7.40
181.0
3.56
Phenol
CeHsOH
43.0

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