difference between substitution reactions and addition reactions

The reactions in which an atom or group of atoms in a molecule is replaced or substituted by different atoms or group of atoms are called substitution reaction. For example, In substitution reactions the hydrogen of th..

Reactions in which two molecules react to form a single product are called addition reactions. For example, Depending upon the type of attacking reagent, the substitution or addition reactions are also classified as free radical, elec..

All amino groups -NH 2 , -NHR, -NR 2 are most powerful activating groups in aromatic electrophilic substitution reactions are ortho and para directing. Aniline gets instantaneously brominated at all of the three O, p - positions to give a white precipitate. The high react..

At elevated temperatures (500°C), higher alkenes give substitution products with chlorine. For example, CH 3 -CH=CH 2 + Cl 2 ClCH 2 -CH=CH 2 +HCl propene 3-chloropropene Branched-chain alkenes give substitution..

Ethyne undergoes addition reactions to give saturated compound..

Ethene being an unsaturated compound, undergoes addition reactions to form saturated compound..

The halogen atom is ortho and para directing and therefore, substitution takes place at ortho and para positions giving electrophilic substitution reactions at the benzene ring. In the resonance structures of chlorobenzene the ortho and para positions get negatively c..

In the C-X bond there is a partial positive charge on the carbon atom and negative on the halogen atom. Thus nucleophilies attack the electron deficient carbon resulting in the displacement of the weaker nucleophile, the halide ion. Reactions of alkyl halides are generally nucleophilic h..