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At $27^{\circ} \mathrm{C},$ the vapor pressure of pure water is 23.76 mmHg and that of an urea solution is $22.98 \mathrm{mmHg}$. Calculate the molality of solution.

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$1.9 m$

Chemistry 102

Chapter 12

Physical Properties of Solutions

Solutions

Carleton College

Rice University

Drexel University

University of Maryland - University College

Lectures

03:58

In chemistry, a solution is a homogeneous mixture composed of two or more substances. The term "solution" is also used to refer to the resultant mixture. The solution is usually a fluid. The particles of a solute are dispersed or dissolved in the solvent. The resulting solution is also called the solvent. The solvent is the continuous phase.

05:06

In physics and thermodynamics, the natural tendency of a system to change its state is its tendency to increase the entropy of the system. It is a measure of the disorder in a system.

03:54

At $27^{\circ} \mathrm{C}…

06:48

At $27^{\circ} \mathrm{C},…

00:42

At $25^{\circ} \mathrm{C}$…

02:35

A solution is made by diss…

professor solution to solve for the malaria morality off the solution. We need the malls off salute That is Yuria and the kilograms off soul went It is water. If we assume that we have one more off water we know the mass off water using the change in Weber pressure we can solve for the mall Fraction off Furia and then the malls off Yuria now sold for the mole fraction off Yuria. We have the occasional delta equal toe even note minus P even is called toe xto. Your note here even note, is the partial pressure off a soul went over solution Everyone is given, by the way per pressure off the pure soul When that is, Delta equal to 23.7 six mm h g minus 22.98 am MSG which is equal to 0.78 AM MSG. Now we have the equation that delta equal to X curia multiplied by P water so exactly equal to Delta P by P. Voter here substituting the values and solving, we get the value 0.33 Now as you we have one mole off water now solve form also Furia. So exterior Equal tome also Furia, divided by moles off Yuria place malls off water here by substituting the value we get them. Also, Furia is 0.34 more now one more off water has a mass off 18.2 g or 0.1802 kg. We now know the malls off salute Yuria and the kilograms off solvent water so we can solve for the morality off the solution. So we know the formula for morality is equal to malls Off salute divided by malls, off solvent in kilogram. Here we put in the values and solving we get. The final value is 1.9 mole. So the morality is equal to 1.9 am So this is the complete solution Step by step in detail. Please go through this

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