PREDICTING THE PRODUCTS OF SINGLE DISPLACEMENT REACTIONS Single

PREDICTING THE PRODUCTS OF SINGLE DISPLACEMENT REACTIONS

Single Displacement Reactions � In a single displacement reaction one element replaces another similar element in a compound. � This forms a new compound a new element. � The general formula is: A + BC AC + B � The general rule is metals replace metals, and non-metals replace non-metals.

The Activity Series � The activity series is a list of elements and their order of decreasing reactivity. � On the metal series, a metal element will displace a metal ion that appears below it in the series. � For a reaction to occur, the lone metal must be higher on the activity series.

Halogens Activity Series � On the halogen series, a halogen will displace another halogen that is lower on the series. � Fluorine is the most reactive. � Iodine is the least reactive.

Example: Cu(s) + 2 Ag. NO 3(aq) 2 Ag(s) + Cu(NO 3)2(aq) Use the most common charge for the transition metal.

Practice �Na(s) + Zn. Cl 2(aq) �Na is higher on the Activity Series than Zn, therefore a reaction will occur. 2 Na(s) + Zn. Cl 2(aq) Zn(s) + 2 Na. Cl(aq)

� Li(s) + HNO 3(aq) �Li is higher on the Activity Series than H, therefore a reaction will occur. 2 Li(s) + 2 HNO 3(aq) H 2(g) + 2 Li. NO 3(aq)

�Br 2(l) + KI(aq) �Br is higher on the Activity Series than I, therefore a reaction will occur. Br 2(l) + 2 KI(aq) I 2(s) + 2 KBr(aq)

� Au(s) + Cu. SO 4(aq) �Au is NOT higher on the Activity Series than Cu, therefore NO reaction (NR) will occur because the LONE metal is not higher. Au(s) + Cu. SO 4(aq) N. R.