kinetics

Energy - Energy is a number that we associate with a system of one or more objects. If a force acts on one of the objects, making it move, then the number changes. After countless experiments, scientists and engineers realised that if the scheme by which we assign these energy numbers is planned ca..

In order to explain the observed behaviour of gases, a model was proposed based on the molecular and kinetic concept of gas molecules. This model takes into account the particulate nature of matter and the constant movement of particle..

This theory explains the physical properties of matter in terms of motion of its molecules. According to this theory, every substance (solid, liquid or gas) consists of a large number of minute particles called molecules . A molecule may be defined as the smallest particle of a substance that can e..

We know that all moving objects possess momentum. Momentum of the body is defined as the product of its mass and the velocity. Now let us see how kinetic energy of a body is related to its momentum. Consider a body of mass 'm' moving with a velocity 'v'. Then, momentum of the body is g..

Heat..

Translational Kinetic Energy of Gas - The total translational energy of all the molecules of the gas is the average kinetic energy of a molecule is from equation (v..

We know that a hotter body has greater internal energy than a similar colder body. Thus, higher temperature means higher internal energy and lower temperature means lower internal energy. According to the kinetic theory of gases, the internal energy of an ideal gas is the same as the tota..

Average kinetic energy of a molecule is The total kinetic energy of all the molecules is The average speed is somewhat smaller than the rms speed. It can be shown th..

Kinetic Energy and Temperature - Let us consider one-gram molecule (mole) of the gas. Let M and V be its mass and volume respectively. The pressure exerted by the gas is given by: But PV = RT where T is the absolute temperature of the gas and R is the molar gas constant. R is the gas cons..

. Transition State explains the rate of reaction in term of formation of a transition state of reacting molecules. The formation of transition state requires energy of activation. Transition state theory connects kinetic rates with thermodynamic properties of reactants and the transition ..