Organic & Inorganic Chemistry

Biochemistry, Polymer chemistry, Materials Chemistry

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Chemical reactions occur once collisions occur between atoms or molecules and there's ensuing modification within the arrangement of the chemical bonds. Therefore, rate of a reaction is proportional to the amount of collisions between molecules.  Not each collision can lead to a chemical reaction of the entire variety of collisions, solely a particular share can occur at the suitable energy to permit the processes of attractive force breaking and forming to occur. A first-order reaction may be a reaction that yield at a rate that depends linearly on just one chemical analysis. Differential rate laws area unit usually accustomed describe what's occurring on a molecular level throughout a reaction, whereas integrated rate laws area unit used for crucial the reaction order and also the worth of the speed constant from experimental measurements and chemical biology. Several necessary biological chemistry,like the formation of double-stranded deoxyribonucleic acid from two complementary strands, are often delineated mistreatment second order mechanics. During a second-order reaction, the total of the exponents within the rate law is capable .The speed of a second-order reaction could also be proportional to one concentration square  or to the merchandise of two concentrations the speed crucial step is that the slowest step of a chemical process that determines the speed at that the reaction yield.