Physical Chemistry

– In physics, mechanical work is defined as force multiplied by the distance through which the force acts. – In elementary thermodynamics, the only type of work generally considered is the work done in the expansion (or compression) of a gas Nature of Heat and Work  – When a change …

– Thermodynamic Processes involve the change of conditions (temperature, pressure, and volume). Thermodynamic Processes – When a thermodynamic system changes from one state to another, the operation is called a Process. – Thermodynamic Processes involve the change of conditions (temperature, pressure, and volume). – The various types of thermodynamic processes …

What is Thermodynamics? – Thermodynamics is The study of the flow of heat or any other form of energy into or out of a system as it undergoes a physical or chemical transformation. – In studying and evaluating the flow of energy into or out of a system, it will …

Hybridization and Shapes of Molecules – In the previous subject, we talked about the concept of Hybridization and the types of Hybridization, but in this subject, we will talk about Hybridization and Shapes of Molecules. – Diatomic molecules must all be invariably linear but tri-and tetra-atomic molecules have several possible …

– In this subject, we will discuss the Hybridization: Definition, Types, Rules, and Examples – While the formation of simple molecules could be explained adequately by the overlap of atomic orbitals, the formation of molecules of Be, B, and C present problems of greater magnitude having no solution with the …

– In this subject, we will discuss free download of Physical Chemistry book, 3rd edition by Robert G. Mortimer The Preface of Physical Chemistry book    – The book is divided into four parts: – The first part focuses on the macroscopic properties of physical systems. It begins with the …

– In this subject, we will discuss free download of Fundamentals of Electrochemistry book by V.S. Bagotsky The Preface of Fundamentals of Electrochemistry book – Two very important fields of natural science—chemistry and the science of electricity— matured and grew vigorously during the first half of the nineteenth century. Electrochemistry …

Bond Formation (Valence Bond Theory) – Bond formation between atoms to give chemical compounds can be interpreted admirably in terms of the orbital theory of atomic structure. – Heitler and London believed that electron cloud of the valence orbital on one atom ‘overlaps’ the electron cloud of the other bonding …

MCQ on Chemical bonding – In this subject, you will find 50 questions and answers MCQ on Chemical bonding   1. The valency of an element is ___________ (a) the combining capacity of one atom of it (b) the number of bonds formed by its one atom( c) the number …

– In this subject, we will discuss the VSEPR Theory: definition, Postulates, limitations, and Predicting Shapes of Molecules. VSEPR Theory – The Lewis structure of a molecule tells us the number of pairs of electrons in the valence shell of the central atom. – These electron pairs are subject to …

– In this subject, we will discuss the Bond Dissociation Energy: Definition, Equation, Problems Bond Dissociation Energy  – Bond breaking can be quantified using the bond dissociation energy. – The bond dissociation energy is the energy needed to homolytically cleave a covalent bond. – The energy absorbed or released in …

– In this subject, we will discuss the Metallic Bonding: Definition, Properties, Examples, Explanation Metallic Bonding – The valence bonds that hold the atoms in a metal crystal together are not ionic, nor are they simply covalent in nature. – Ionic bonding is obviously impossible here since all the atoms …

– In this subject, we will discuss the Polar Covalent Bond: Definition, Properties, Examples Polar Covalent Bonds – In the H2 or Cl2 molecule, the two electrons constituting the covalent bond are equally shared by the two identical nuclei. – Due to the even distribution of (+) and (–) charge, …

– In this subject, we will discuss the hydrogen Bonding (Definition, types, Examples, Characteristics) Hydrogen Bonding (H-Bonding) – When hydrogen (H) is covalently bonded to a highly electronegative atom X (O, N, F), the shared electron pair is pulled so close to X that a strong dipole results – Since the …

– In this subject, we will discuss the Coordinate Bond: (Definition, Formation, Examples) Coordinate bond – In a normal covalent bond, each of the two bonded atoms contributes one electron to make the shared pair. – In some cases, a covalent bond is formed when both electrons are supplied entirely …

– In this subject, we will discuss the Covalent Bond (Definition, Examples, Types, Properties) Covalent Bond  – The electron transfer theory could not explain the bonding in molecules such as H2, O2, Cl2, etc., and in organic molecules, that had no ions. – It was G.N. Lewis who suggested that two …

– In this subject, we will discuss the Ionic Bond (Definition, Examples, Types, Properties) Ionic Bond   – This type of bond is established by the transfer of an electron from one atom to another. – Let us consider a general case when an atom (A) has one electron in …

– In this subject, we will discuss the important Terms and Definitions of Chemical Bonding. Chemical Bond  – Molecules of chemical substances are made of two or more atoms joined together by some force, acting between them. – This force which results from the interaction between the various atoms that …

Nuclear Chemistry Quiz – In this subject, you will find 40 questions and answers MCQ on Nuclear Chemistry  1. Which is the correct symbol for an alpha particle? (a) 4He2 (b) 1n0 (c) 0e-1 (d) 1p1 Answer. (a) 2. Of the following, which is the most damaging when ingested? (a) …

– In this subject, we will discuss the Nuclear Fusion Process ( Definition, Occurrence, Examples, Applications) Nuclear Fusion Process  – The Nuclear Fusion Process is the opposite of nuclear fission. – Nuclear fusion may be defined as the process in which two lightweight nuclei combine or fuse to form a …