Answered: Determine the boiling point of a…

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter14: Mixtures And Solutions

Section14.4: Colligative Properties Of Solutions

Problem 52SSC

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Determine the boiling point of a solution consisting of 125 mg of cinnamaldihyde dissolved in 1.10 g of carbon tetrachloride normal bowling point of carbon tetrachloride is 76.7.

Expert Solution

Step 1: Introduction to concept

When a solute is added to a solvent then it will result in elevation in boiling point. As boiling point of a solution is a colligative property that means it depends upon the mass of the solute.

Given that cinnamaldehyde is dissolved in carbon tetrachloride. Here, cinnamaldehyde is solute and carbon tetrachloride is solvent. So the boiling point of carbon tetrachloride increases.

The elevation in boiling point is given by:

$∆ T_{b} = K_{b} \times m o l a l i t y ∆ T_{b} = K_{b} \times \frac{M a s s o f s o l u t e}{M o l a r m a s s o f s o l u t e} \times \frac{1}{M a s s o f s o l v e n t i n k g} W h e r e : K_{b} = E b u l l i o s c o p i c c o n s \tan t = 5.03 \frac{° C . k g}{m o l e}$

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