Category: Facts

Types of Waves

Science > Physics > Wave Motion > Wave Motion In the last article, we have studied the concept of wave motion, its terminology and its characteristics. In this article, we shall study different types of waves and their characteristics. Wave in a medium may be defined as the disturbance moving through the medium without change […]

Physics

Simple Harmonic Progressive Wave

Post author By Hemant More
Post date January 17, 2020
1 Comment on Simple Harmonic Progressive Wave

Science > Physics > Wave Motion > Simple Harmonic Progressive Wave In this article, we shall study the concept of a simple harmonic progressive wave, its characteristics and its equation. Wave in a medium may be defined as the disturbance moving through the medium without change of form. e.g. ripple in water formed due to […]

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. […]

Physics

Motion in a Vertical Circle

Post author By Hemant More
Post date January 16, 2020
8 Comments on Motion in a Vertical Circle

Science > Physics > Circular Motion > Motion in Vertical Circle When studying the motion of a body in a vertical circle we have to consider the effect of gravity. Due to the influence of the earth’s gravitational field, the magnitudes of the velocity of the body and tension in the string change continuously. It […]

Tags Circular motion, Looping a loop, Maximum tension in the string, Minimum tension in the string, Non-uniform circular motion, Tension in the string, Vertical circle