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Estimate the vapor pressure of water at $60^{\circ} \mathrm{C}$ (see Problem 14.119 ).

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$156.6 \mathrm{mmHg}$

Chemistry 102

Chapter 14

Chemical Equilibrium

Rice University

Brown University

University of Toronto

Lectures

10:03

In thermodynamics, a state of thermodynamic equilibrium is a state in which a system is in thermal equilibrium with its surroundings. A system in thermodynamic equilibrium is in thermal equilibrium, mechanical equilibrium, electrical equilibrium, and chemical equilibrium. A system is in equilibrium when it is in thermal equilibrium with its surroundings.

00:54

In chemistry, chemical equilibrium (also known as dynamic equilibrium) is a state of chemical stability in which the concentrations of the chemical substances do not change in the course of time due to their reaction with each other in a closed system. Chemical equilibrium is an example of dynamic equilibrium, a thermodynamic concept.

01:40

What is the vapor pressure…

03:27

(a) What is the vapor pres…

02:02

Calculate the total water …

02:20

02:25

The vapor pressure of pure…

02:08

04:12

(I) What is the partial pr…

00:15

So for the falling balance equation, which is thief a exchange between liquid water and water vapor. We want to know what the partial pressure, What the vapour pressure. Ah, 60 degree Celsius would be. And we want to know how we go about finding that. So first and foremost will be using the fallen equation which we saw earlier in the book. And we always do the second temperature first and subtract he first temperature from it. So we know when talking about thes equilibrium, constants, you can also talk, talk about pressures. So that means we can rewrite this in terms of pressure. We have p one over Pete, too, and the rest is the same. So now we can plug in what we know. So we know you start with one a. T. M. Water. We don't know this faith for pressure, which is what we're trying to find, you know, the Delta H we can go ahead and put that in. We're going to put that over the gas constant. Then we can for Calvin. No, this is 333 Calvin, just 60 degree Celsius and then are starting, which was 373 trees. Kalfin. So to go down a little bit so much, you know, we can look at what the right side of this equation is going to be simplified to. It's gonna be 1.58 And in order to get rid of this, Ellen Will wanted you, Ellen to both sides. So then we know the P two who want to one over the following. And if you were to actually calculate us out, you would find the vapour. Pressure off water at 60 60 degree Celsius is 0.206 a. T. M. And doing a simple conversion, we can find that this is also a close equivalent to 156 0.6 millimeters of green.

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03:36

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