chemical kinetics

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 nuclear energy is responsible for the tidal energy, heat energy stored in water, the chemical energy stored in plants, and the kinetic en..

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 addition to or remo..

The integrated rate equation can also be written in the form, This equation shows that the concentration of the reactant decreases exponentially. From the equation it can be seen that if ln[A] is plotted against t, a straight line is obtained with the slope equal to (-k..

Concept of Activation Energy - 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 ..

2 O 5 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..

Law of Conservation of Energy - 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..

Second Order Reaction - 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 ..

The Solar Energy - 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 nuclear energy is responsible for the tidal energy, heat energy stored in water, the chemical energy stored in plants, and the h..

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 is difficult to derive the conce..

The total energy in the universe is present either as kinetic energy or as potential energy. For example, the water stored in a dam possesses potential energy by virtue of its height (position). When this water is allowed to fall, its potential energy gets converted into kinetic..