Reagent example sentences

As you know, a chemical reaction involves reactants, attacking reagents and the medium in which the reaction takes place.The equilibrium can be shifted in the opposite direction by adding reagents that remove Fe3+ or SCN– ions.The presence of weaker ?-bond makes alkenes unstable molecules in comparison to alkanes and thus, alkenes can be changed into single bond compounds by combining with the electrophilic reagents.Therefore, alkenes are easily attacked by reagents or compounds which are in search of electrons.These hydrocarbons are inert under normal conditions as they do not react with acids, bases and other reagents.During chlorination, alkylation and acylation of benzene, anhydrous AlCl3, being a Lewis acid helps in generation of the elctrophile Cl?, R?, RC?O (acylium ion) respectively by combining with the attacking reagent.Saturated hydrocarbons are fairly unreactive and are inert in the presence of most reagents.Alkenes on reaction with cold, dilute, aqueous solution of potassium permanganate (Baeyer's reagent) produce vicinal glycols.If excess of electrophilic reagent is used, further substitution reaction may take place in which other hydrogen atoms of benzene ring may also be successively replaced by the electrophile.