13th Edition

ISBN: 9781259911156

Author: Raymond Chang Dr., Jason Overby Professor

Publisher: McGraw-Hill Education

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The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for a…

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained …

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Textbook Question

Chapter 11, Problem 11.102QP

The liquid-vapor boundary line in the phase diagram of any substance always stops abruptly at a certain point. Why?

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Chapter 11, Problem 11.101QP

Chapter 11, Problem 11.103QP

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6.The diagram below is an example of Liquid-Vapor(LV) Pressure (P vs Mole Fraction).Fill out the question marks with correct number of degrees of freedom. LV Pressure – Composition (LV – PZ) Phase Diagram | How to read this phase diagram: XA = 0 Xe = 1 P = Pg Xx = 1 • We can designate the fraction of A and B in the liquid be XA and Xa, while the fraction of A and B in the gas phase be ya and Yg- XB = 0 F=? Liquid Phase F=? • Z, is the composition of A: • Below the vapor curve, or the bubble curve, A is pure vapor, and Z, = VA • Above the liquid curve, or the dew curve, A is pure liquid, and Z, = Xa P P= P F=? Vapor Phase YA = 1 YA = 0 Ya = 1 ZA Ys = 0

The figure below is the phase diagram of a purse substance. (I), (II) and (III) are the 3 phases of the substance, and there are 3 phase boundaries. Based on this phase diagram, which of the following statement is (are) true about this substance? a) Below 0.7 atm, the liquid phase of this substance can be formed by carefully adjusting temperature. b) The substance can be transformed from liquid to solid by applying pressure. c) The normal boiling point is between 190 K and 210 K. Pressure (in atm) 1.4 1.3 1.2 1.1 1.0 0.9 0.8 (III) 0.7 0.6- 0.5- 120 140 160 180 200 220 T (in Kelvin) O a) only O b) only O c) only O a) and b) O b) and c) O c) and a) O a), b) , and c) O None of the 3 statements is true.

Chemistry The vapor pressure, P, of a certain liquid was measured at two different temperatures, T. The data is shown in this table. T (K) P (torr) 293.6 145.3 356.9 783.5 If you were going to graphically determine the enthalpy of vaporization, AHmp, for this liquid, what points would you plot? To avoid rounding errors, use three significant figures in the x values and four significant figures in the y values. point 1: x = point 1: y = point 2: x = point 2: y = Determine the rise, run, and slope of the line formed by these points. rise: run: slope: What is the enthalpy of vaporization for this liquid? AHap = J/mol

Chapter 11 Solutions

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