Answered: When a solution is made from 26.6 g of…

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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When a solution is made from 26.6 g of an unknown nonelectrolyte dissolved in 186.2 g of solvent, the solution boils at 65.45 °C. The boiling point of the pure solvent and its K, are 60.17 °C and 2.27 °C/m, respectively. Calculate the molar mass of the unknown nonelectrolyte in g/mol. Report your answer to TWO places past the decimal.

Expert Solution

Step 1

The given data is as follows:

The mass of unknown nonelectrolyte = 26.6 g

The mass of solvent = 186.2 g

The boiling point of solution $(T_{b})$ = $65.45 ° C$

The boiling point of pure solvent $(T_{b}^{°})$ = $60.17 ° C$

The molar elevation constant $(K_{b}) = 2.27 ° C / m$

The molar mass of unknown nonelectrolyte = ?

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