AS and A2 Chemistry notes and resources (WJEC specification) - UNIT CH5 Physical and inorganic chemistry

This unit develops ideas of redox, kinetics, energy changes and equilibria. The inorganic chemistry of some elements in various sections of the Periodic Table is studied.

16.3 - Group 4 (14)

Candidates should be able to:

(k) describe the change in relative stability of oxidation states II and IV down Group 4, as shown by reactions of CO as a reducing agent with oxides and Pb(IV) as an oxidising agent in the reaction of PbO2 with concentrated hydrochloric acid ¢Ó;

(l) recall the nature, physical and acid-base properties of CO2 and PbO; ¢Ó

(m) describe the types of bonding in the chlorides CCl4, SiCl4 and PbCl2 and their reactions with water ;¢Ó

(n) recall the reactions of Pb2+(aq) with aqueous NaOH, Cl . and I . . ¢Ó