chemical kinetics

We come across in our day-to-day life different forms of energy, like the mechanical energy, heat energy, electrical energy, chemical energy etc. Here in this chapter, we are mainly concerned with mechanical energy. The two types of mechanical energy are kinetic energy and poten..

Rate of a Reaction - Rate of reaction basically means the speed at which a chemical reaction occurs. The speed of a reaction is determined by monitoring the concentrations of the reactants or products at intervals of time. The volume of the reaction vessel is kept constant and there is no..

For a reaction to occur, reactant molecules must collide with each other. Only those collisions result in product formation which have energy equal or more than a certain minimum energy. This energy is called the threshold energy. This implies that there is an energy barrier between reactants and p..

> as given in the data below: These values are plotted as rate versus concentration in figure 6.7 and rate versus (concentration) 2 in the figure 6.8. fi..

Let us see what is actually taking place in the following examples: Steam engine: The coal burns. Heat due to the combustion of coal converts water into steam. The expansive force exerted by the steam on the piston of the engine moves the locomotive. Chemical energy is converted to heat e..

Example 6: Nitrogen dioxide (NO 2 ) gas reacts with fluorine gas (F 2 ) to give nitrosyl fluoride. The chemical reaction is given by the equation. The reaction has the rate law as: rate (r) = k [NO 2 ] [F 2 ] The rate has order one with respect to nitrogen dioxide concentration and fluori..

Sunlight falling on the earth's surface equals 50,000 times the energy used each year by man. Almost all our energy comes from sun. The sun's energy is responsible for the tidal energy, heat energy stored in water, the chemical energy stored in plants, and the kinetic energy s..

Experimental Determination of Rate of Reaction - The rate of a reaction is determined by measuring the concentration of the reactant or product at different intervals of time. The concentration is measured, by measuring a related property such as color, pressure or volume (as in the case of gas pha..

Series Reactions (First Order) - A complex reaction involving two series reactions can be of the type, A reacts to give B, which is then transformed to C. Both the elementary reactions (1) and (2) exhibit first - order kinetics, that is, For this reaction, [A] = [A] o exp (-k 1 t) (36) It..