Redox reactions involving transfer of electrons can be splitted into 2 1/2ves, with one half showing oxidation and the other showing reduction!
Two kinds of redox reactions that can be explained using a transfer of electrons are: reactions of metals with dilute acids, and displacement reactions. First there is reaction of metals with dilute acid. The ionic equation of magnesium and dilute hydrochloric acid is:
Mg(s) +2H+-->Mg2+(aq) + H2(g)
In the reaction, electrons are transferred from the magnesium atom to the hydrogen ions, the Mg atom losing electrons to form Magnesium ion and hydrogen having more electrons to form a molecule..
The 2nd kind are displacement reactions. Chlorine displaces iodine to form KI solution. Electrons are transferred from iodide ions to the chlorine. The iodide ions are oxidised through losing electrons and the chlorine gains electrons and is reduced.
No comments:
Post a Comment