chemical kinetics

Processes by which substances are transformed to one or several products are called chemical reactions. Chemical processes that occur in the presence of light, like sunlight, are called photochemical reactions. These processes can occur naturally or under controlled condit..

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. 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 ..

>Matter consists of molecules. These are the smallest particles, which are capable of free existence and retain all the chemical properties of the parent substance. The molecules are always in a state of random continuous motion. The molecules exert forces on one another. These forces dep..

Internal Energy - Every substance possesses a definite quantity of energy, under a given set of factors such as chemical nature of the substance, temperature and pressure. The total energy contained in a system or substance is called its internal energy or intrinsic energy. It is represen..

Processes by which substances are transformed to one or several products are called chemical reactions. Chemical processes that occur in the presence of light, like sunlight, are called photochemical reactions. These processes can occur naturally or under controlled conditions i..

A complex reaction involving two series reactions can be of the type, ..

Relationships for Zero order, First order and Second order Reactions..

Zero Order Reaction - Example 4: Ammonia (NH 3 ) gas decomposes over platinum catalyst to nitrogen gas (N 2 ) and hydrogen gas (H 2 ). The chemical reaction is as follows: fig 6.4(a) - Concentration versus time profile for a zero order react..