Physical Chemistry

Höfundur Horia Metiu

Útgefandi Taylor & Francis

Snið ePub

Print ISBN 9780367238452

Útgáfa 1

Útgáfuár 2006

10.490 kr.

Description

Efnisyfirlit

  • Cover
  • Half Title
  • Title Page
  • Copyright Page
  • Table of Contents
  • Preface
  • How to use the workbooks, exercises, and problems
  • Chapter 1 Generalities about the rates of chemical reactions
  • Introduction
  • Chemical kinetics: what is it?
  • The rate of a chemical reaction
  • How to define the rate of a reaction
  • The extent of reaction
  • The evolution of the extent of reaction
  • The reaction rate
  • Mass conservation in a chemical reaction
  • Example: rate of decomposition of uranyl nitrate
  • The general scheme of kinetics
  • Let us add some theory: a phenomenological approach
  • Testing the equation and determining the rate constant
  • Supplement 1.1 Concentration
  • Supplement 1.2 A summary of what you need to know about differential equations
  • A differential equation has an infinite number of solutions
  • The initial condition
  • How to solve differential equations: a practical guide
  • Systems of differential equations
  • Chapter 2 Irreversible first-order reactions
  • Introduction
  • What is an irreversible first-order reaction?
  • Unimolecular irreversible reactions
  • The rate equation
  • Not all unimolecular reactions have a first-order rate
  • Solution of the rate equation
  • The extent of reaction
  • Solving the rate equation to calculate η(t)
  • The concentrations
  • Test whether Eq. 2.10 fits the data and determine the constant k(T,p)
  • A crude fitting method
  • The least-squares method for fitting the data
  • Chapter 3 The temperature dependence of the rate constant: the Arrhenius formula
  • Introduction
  • The Arrhenius formula
  • How to determine the parameters in the Arrhenius formula
  • How to determine k0, E, and n
  • How to determine the constants in the Arrhenius equation: the data
  • A graphic method for using the Arrhenius formula
  • A crude determination of k0 and E in the Arrhenius formula
  • The determination of k0 and E by least-squares fitting
  • The activation energy
  • Determination of the Arrhenius parameters: a more realistic example
  • Fitting the data to determine k0 and E
  • How do we use these results?
  • The decay rate
  • Where do these equations come from?
  • Why the rate law is dA/dt = –kA?
  • Why the Arrhenius law?
  • Chapter 4 Irreversible second-order reactions
  • Introduction
  • The rate equation for an irreversible, bimolecular reaction
  • The rate equation for the reaction A + B → C + D
  • The rate equation for the reaction 2A → C + D
  • The rate equation for the reaction A + B → C + D in terms of the extent of reaction
  • The dependence of η(t) on time
  • The evolution of the concentrations
  • How to use these kinetic equations in practice
  • An example: the problem and the data
  • An example: setting up the equations
  • An example: numerical analysis of the kinetics
  • What controls the decay time
  • How to analyze kinetic data for second-order reactions
  • An example of analysis
  • Method I. Calculating k for each data point
  • Method II. Using a least-squares fitting
  • Chapter 5 Reversible first-order reactions
  • Introduction
  • The rate equation and its solution
  • The rate equation for concentration
  • The evolution of the concentrations
  • The change of the extent of reaction and concentration: an example
  • Understanding the numerical results in the example
  • The connection to thermodynamic equilibrium
  • Equilibrium concentration by taking the long time limit in the kinetic theory
  • Data analysis: an example
  • The conversion of 4-hydroxybutanoic acid to its lactone
  • The equations used in analysis
  • A method of analysis
  • Chapter 6 Reversible second-order reactions
  • Introduction
  • The rate equations
  • The equilibrium conditions
  • Mass conservation
  • The rate equations in terms of the extent of reaction
  • A general equation for the rate of change of η(t)
  • The solution of the general rate equation for η(t)
  • The solution provided by Mathematica
  • Solving the differential equation for η(t) by using the methods learned in calculus
  • Calculate η(t) for the four types of reaction
  • The use of these equations
  • Analysis of the reaction 2HI ⇌ H2 + I2
  • A summary of the equations needed for analysis
  • Using the equilibrium information
  • Fitting the data to find kb
  • How to use the results of this analysis
  • Chapter 7 Coupled reactions
  • Introduction
  • First-order irreversible parallel reactions
  • The rate equations
  • Independent variables: the extents of the reactions
  • The change of concentration: mass conservation
  • The rate equations in terms of η1 and η2
  • Solving the rate equations for η1(t) and η2(t)
  • First-order irreversible consecutive reactions
  • The rate equations
  • Mass conservation
  • The rate equations for η1 and η2
  • Solving the rate equations to obtain η1(t) and η2(t)
  • The evolution of the concentrations
  • The analysis of the results
  • The steady-state approximation
  • Why this is called the steady-state approximation
  • Testing how well the approximation works
  • Chapter 8 An example of a complex reaction: chain reactions
  • Introduction
  • The correct rate equation
  • The reaction mechanism: chain reactions
  • Another chain reaction: nuclear reactors and nuclear bombs
  • The rate equations for the reactions involved in the mechanism
  • The rate of change of [HBr]
  • The rate of change of [Br]
  • The net rate of change for HBr
  • Using the five rate equations
  • The temperature dependence
  • Chapter 9 Enzyme kinetics
  • Introduction
  • The Michaelis-Menten mechanism: exact numerical solution
  • The rate equations
  • The extents of reaction
  • Mass conservation
  • The rate equations for η1(t) and η2(t)
  • The solution of the rate equations
  • The Michaelis–Menten mechanism: the steady-state approximation
  • The differential equation for R(t)
  • The differential equation for the evolution of P(t)
  • Practical use of the steady-state approximation to determine Km and k2E(0)
  • The evolution of the concentrations in the steady-state approximation
  • The evolution of R(t)
  • The evolution of P(t) in the steady-state approximation
  • The concentration of the complex and of the enzyme in the steady-state approximation
  • The Michaelis-Menten mechanism: how good is the steady-state approximation?
  • Further reading
  • Index

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