Physical Chemistry , 1st ed.

We also consider the vibrational partition function of C*. It has 3N6 (or 3 N5) terms in it, but one of those terms represents ...

sition state, and rewrite the Eyring equation in terms of the Gibbs free energy. We g e t k c k ° T h eG*/RT (20.80) where ...

which can be rearranged to k e c 2 ° k h T eEA/RTeS*/R (20.84) Equating the activation-energy exponentials in equation 20 ...

A comment on the result: a decrease in entropy suggests a transition state that is more organized than the reactants. When you c ...

20.2 Rates and Rate Laws 20.1.Write three additional rate relationships like equation 20.5 using the definition of the rates fro ...

20.21.Use equation 20.24 to determine the time it takes for a zeroth-order reaction to come to completion. 20.22.When ionic comp ...

(b)Determine an integrated form for [B] over time. Do this by finding an integrated expression for [A]t(Hint:refer to the chapte ...

20.7 & 20.8 Mechanisms and Steady States 20.51. (a)Suggest a mechanism for the bromination of ethane: Br 2 CH 3 CH 3 →CH 3 ...

20.71.For the following two reactions H Cl 2 →HCl Cl H Br 2 →HBr Br the first reaction has a lower value of Athan the seco ...

21 731731 I T’S A CURIOUS THING that elementary physical chemistry can describe a molecule-based model of the gas phase (from th ...

conditions. These conditions are dictated by the structure of the crystal, and there is a simple rule for relating the diffracti ...

deeper analysis of this idea explains their other characteristics, too. This is be- yond our scope, but understand that the inte ...

21.4 and the top of Figure 21.6 are considered the unit cells; the two lower cells in Figure 21.6 are not considered proper unit ...

Now we consider systems where the angles between a,b, and care not all 90°. For this set we start with the least restricted case ...

736 CHAPTER 21 The Solid State: Crystals Cubic Tetragonal Orthorhombic Triclinic Monoclinic Rhombohedral Hexagonal It might seem ...

Example 21.1 Figure 21.10 shows a unit cell for NaCl, another simple ionic crystal. a.Identify the Bravais lattice for NaCl. d.D ...

above the atoms in the first layer, as shown in Figure 21.11a. Building the crystal can be continued by repeating each layer’s p ...

Luckily, going from amu/Å^3 to g/mL is simply an exercise in unit conversions. We can use equation 21.2 along with the fact that ...

Example 21.4 Solid nitrogen, N 2 , has a density of 1.026 g/cm^3 at about 20 K. If solid nitro- gen is known to have some cubic ...

textbooks.) Matter is usually relatively transparent to X rays to different degrees; this characteristic is what makes X rays us ...