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Easiest Way to Solve Physical Chemistry Problems


Physical chemistry is the study of the underlying physical principles that rule the properties and behavior of chemical systems.

A chemical system can be studied from either a macroscopic or microscopic viewpoint. The microscopic viewpoint is laid on the concept of molecules. The macroscopic viewpoint studies large-scale properties of matter without explicit use of the molecule concept. The first half of this book uses mainly a macroscopic viewpoint; the second half uses mainly a microscopic viewpoint.


We can categorize physical chemistry into four areas: thermodynamics, quantum chemistry, statistical mechanics, and kinetics. Thermodynamics is a macro- scopic science that studies the interrelationships of the various equilibrium properties of a system and the changes in equilibrium properties in processes.  Molecules and the electrons and nuclei that create them do not obey classical mechanics. Instead, their motions are governed by the laws of quantum mechanics. Application of quantum mechanics to atomic structure, molecular bond- ing, and spectroscopy gives us quantum chemistry.

The macroscopic science of thermodynamics is a consequence of what is hap- pening at a molecular (microscopic) level. The molecular and macroscopic levels are related to everyone by the branch of science called statistical mechanics. Statistical mechanics gives insight into why the laws of thermodynamics hold and allows calculation of macroscopic thermodynamic properties from molecular properties.

Kinetics is the study of rate processes such as diffusion, chemical reactions and the flow of charge in an electrochemical cell. The theory of rate processes is not as well created as the theories of thermodynamics, statistical mechanics and quantum mechanics. Kinetics uses related parts of thermodynamics, statistical mechanics and quantum chemistry.

There are many sites which provide online chemistry assignment help and they give best and quality education to us.

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