Question

Give 3 differences between displacement reaction & double displacement reaction .

Answer 1

 When a more reactive element displaces a less reactive element from its salt solution, then it is called displacement reaction. While there is an exchange of ions between the reactants to produce new substances, it is called double displacement reaction.In displacement reaction one displacement takes place. While in double displacement reaction two displacements takes place. Following are examples of displacement reaction and double displacement reaction.Mg (s) + 2HCl (aq) ⇨ MgCl2 + H2 (g)2KBr (aq) + BaCl2 ⇨ 2KCl (aq) + BaBr2 (s)