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Category: Chemistry

Enthalpy Of Different Processes

Post author By Hemant More
Post date January 20, 2020
No Comments on Enthalpy Of Different Processes

Science > Chemistry > Chemical Thermodynamics and Energetics > Heat of Reaction Of Different Processes In this article, we shall study change in enthalpy for different chemical processes. Enthalpy of Formation (ΔfH° or ΔformationH°): The change in enthalpy of a chemical reaction at a given temperature and pressure, when one mole of the substance is formed […]

Tags Adiabatic process, Bond energy, Bond enthalpy, Chemistry, Constant pressure process, Constant temperature process, Constant volume process, Crystal lattice energy, Cyclic process, Endothermic reaction, Enthalpy of atomization, Enthalpy of combustion, Enthalpy of condensation, Enthalpy of dissociation, Enthalpy of formation, Enthalpy of freezing, Enthalpy of fusion, Enthalpy of hydration, Enthalpy of ionization, Enthalpy of neutralization, Enthalpy of reaction, Enthalpy of solution, Enthalpy of sublimation, Enthalpy of vapourization, Exothermic reaction, Free expansion, Fusion, Heat of reaction, Irreversible process, Isobaric process, Isochoric process, Isothermal process, Pressure volume work, Process, Reversible, Reversible process, Sign convention, State of a substance, Sublimation, Thermochemical equation, vapourization, work done in cyclic process

Physical Chemistry

Heat of Reaction

Science > Chemistry > Chemical Thermodynamics and Energetics > Heat of Reaction The branch of chemistry which deals with the quantitative study of thermal or heat changes in various chemical reactions is known as thermochemistry. In this article, We shall discuss very important concept of chemistry i.e. heat of reaction. Thermochemical Equation: An equation which […]

Physical Chemistry

Enthalpy of a System

Science > Chemistry > Chemical Thermodynamics and Energetics > Enthalpy of a System The enthalpy of system is defined as the sum of the internal energy of the system and energy that arises due to pressure and volume. It is denoted by letter H. Mathematically, H = U + PV Where, H = Enthalpy U […]

Tags Adiabatic process, Change in enthalpy, Chemistry, Constant pressure process, Constant temperature process, Constant volume process, Cyclic process, Enthalpy, Enthalpy of system, Free expansion, Irreversible process, Isobaric process, Isochoric process, Isothermal process, Pressure volume work, Process, Reversible process, Sign convention, work done in cyclic process

Physical Chemistry

Laws of Thermodynamics

Science > Chemistry > Chemical Thermodynamics and Energetics > First Law of Thermodynamics In this article, we shall study the first law of thermodynamics and its application to different chemical processes. Zeroth Law of Thermodynamics: Statement: If two bodies (say A and B) are in thermal equilibrium of the third body (say C) then body […]

Tags Adiabatic process, Chemistry, Constant pressure process, Constant temperature process, Constant volume process, Cyclic process, First law of thermodynamics, Free expansion, Irreversible process, Isobaric process, Isochoric process, Isothermal process, Pressure volume work, Process, Reversible process, Secpond law of thermodynamics, Sign convention, work done in cyclic process, Zeroth law of thermodynamics

Physical Chemistry

Concept of Maximum Work

Science > Chemistry > Chemical Thermodynamics and Energetics > Concept of Maximum Work According to the first law of thermodynamics, ΔU = q + W In an isothermal process, ΔU = 0, ∴ q = – W Therefore, all the heat absorbed by the system is utilized to do work. […]

Physical Chemistry

Work Done in Chemical Process

Post author By Hemant More
Post date January 17, 2020
1 Comment on Work Done in Chemical Process

Science > Chemistry > Chemical Thermodynamics and Energetics > Work Done in Chemical Process Pressure Volume Work: Consider an ideal gas having definite mass (say n moles) be enclosed in a cylinder fitted with weightless, frictionless, tightly fitted, movable piston. Let ‘A’ be the area of the cross-section of the cylinder. Let the gas expand […]

Tags Adiabatic process, Chemistry, Constant pressure process, Constant temperature process, Constant volume process, Cyclic process, Free expansion, Irreversible process, Isobaric process, Isochoric process, Isothermal process, Pressure volume work, Process, Reversible process, Sign convention, work done in cyclic process

Physical Chemistry

Concept of Internal Energy

Post author By Hemant More
Post date January 17, 2020
3 Comments on Concept of Internal Energy

Science > Chemistry > Chemical Thermodynamics and Energetics > Concept of Internal Energy The internal energy can be defined as the sum of all possible kinds of energies that a system possesses. Every chemical reaction is associated with heat change. Heat is either evolved or absorbed. This is possible only when every substance involved in […]

Tags Bonding energy, Chemical energy, Chemistry, Energy, Intermolecular energy, Internal energy, Intramolecular energy, Kinetic energy, Potential energy, Rotational energy, Thermal energy, Translational energy, Vibrational energy

Physical Chemistry

Chemical Processes

Science > Chemistry > Chemical Thermodynamics and Energetics > Chemical Processes In this article, we shall discuss what is meant by process and different types of chemical processes. Process: It is the path or the operation by which a system changes from one state to another. A process causes a change in the value of […]

Tags Adiabatic process, Chemistry, Constant pressure process, Constant temperature process, Constant volume process, Cyclic process, Irreversible process, Isobaric process, Isochoric process, Isothermal process, Process, Reversible process

Physical Chemistry

Introduction to Chemical Thermodynamics

Post author By Hemant More
Post date January 16, 2020
7 Comments on Introduction to Chemical Thermodynamics

Science > Chemistry > Chemical Thermodynamics and Energetics > Introduction Chemical Thermodynamics and its Scope: Energy stored in chemical substances is called chemical energy. Thermodynamics is the branch of science that deals with the different forms of energy, the quantitative relationships between them and the energy changes that occur in the physical and chemical process. […]

Physical Chemistry

Electrochemical Series and its Applications

Post author By Hemant More
Post date December 24, 2019
13 Comments on Electrochemical Series and its Applications

Science > Chemistry > Electrochemistry > Electrochemical Series A series of electrodes or half cells arranged in order of their increasing standard oxidation potentials or in the decreasing order of their standard reduction potentials is called an electromotive force series or electrochemical series. Electrochemical series is also known as e.m.f. series Characteristics Electrochemical Series: In […]

Tags Anion, Anode, Cathode, Cation, Cell reaction, Construction of cell, Convention of representation of cell, Corrosion treatment, Displacement reaction, Electrochemical cell, Electrode, Electrode couple, Electrolyte, Electrolytic cell, Electropositivity of metal, EMF series, Gas electrode, Metal - metal ion electrode, Metal-Sparingly Soluble Metal Salt Electrode, Nernst equation, Nernst theory, Non-electrolyte, Oxidant, Oxidation, Oxidation electrode potential, Oxidation potential, Oxidising agent, Products of electrolysis, Reactivity of metal, Redox electrode, Redox potential, Redox reaction, Reducing agent, Reductant, Reduction, Reduction electrode potential, Reduction potential, Reference electrode, Reversibility of cell, Single electrode, Single electrode potential, Solution pressure, Spontaneity of redox reaction, Standard cell potential, Standard electrode potential, Standard emf of cell, Standard oxidation potential, Standard reduction potential, Thermal stability of metallic oxides, Voltaic cell, Working of the cell