1. 4.4 Single Displacement Reaction

2. Involves one element replacing or displacing a second element in a compound A + BC AC + B typical in metallurgical processes

3. A metal element will only displace a metal in a compound. Na (s) + ZnCl 2 (aq)  NaCl (aq) + Zn (s) 2 Na (s) + ZnCl 2 (aq)  2 NaCl (aq) + Zn (s)

4. A non-metal will only displace a non-metal in a compound NaCl (aq) + F 2(g)  NaF (aq) + Cl 2 (g) 2NaCl (aq) + F 2 (g)  2NaF (aq) + Cl 2 (g)

5. Examples! CuCl 2 (aq) + Al  Br 2 + CaI 2 (aq) 

6. Activity Series The Activity Series of the metals is an aid to predicting the products of replacement reactions. Each element on the list replaces from a compound any of the elements below it. The larger the interval between elements, the more vigorous the reaction.

7. MetalsHalogen

9. Going from bottom to top, the metals: - level of reactivity increases - lose electrons more readily - form positive ions more readily - becomes stronger reducing agents

10. A metal 'high up' in the reactivity series: -reacts vigorously and quickly with chemicals -corrodes easily A metal 'low down' in the reactivity series: - doesn't react vigorously and quickly with chemicals - doesn’t corrode easily

11. 1)Use the activity series to predict whether zinc reacts with magnesium nitrate and, if so, the products of this reaction. Represent the reaction in a balanced chemical equation.

12. 2. Predict the products of the reaction (if any) between chlorine gas and a solution of sodium bromide obtained from seawater (brine). Represent the reaction in a balanced equation.