Chemical Reactions

In each of the following slides, a reaction we have done in class is named. The type of reaction, the reaction in words, the equation, and the balanced equation are shown. Try, as you go along, to predict the next step

Synthesis

Magnesium and oxygen produce magnesium oxide

Mg + O2 MgO

2Mg + O22MgO

Decomposition

Hydrogen peroxide breaks downinto water and oxygen

H2O2 H2O + O2

2H2O22H2O2 + O2

Single replacement

Aluminum and hydrochloric acidproduce aluminum chloride andhydrogen gas

Al + HCl AlCl3 + H2

2Al + 6HCl 2AlCl3 + 3H2

Double Replacement

Lead nitrate and sodium iodide produce sodium nitrate and lead iodide

Pb(NO3)2 + NaI NaNO3 + PbI2

Pb(NO3)2 + 2NaI 2NaNO3 + PbI2

Synthesis

Iron(III) and oxygen produce iron oxide (rust)

Fe(III) + O2Fe2O3

4Fe(III) + 3O2 2Fe2O3

Single replacementIron and copper sulfate produce iron sulfate and copper

Fe + CuSO4FeSO4 + Cu

Balanced!

Double replacement and decomposition

NaHCO3 +

Sodium bicarbonate and acetic acid produce sodium acetate, carbon dioxide, and water

C2H4O2

NaC2H3O2 + CO2 + H2O

Balanced !

Now let’s try some more. Balance the equation, and tell what type of reaction is shown.

H2O H2 + O2

2H2O 2H2 + O2

Decomposition

N2 + H2 NH3

N2 + 3H3 2NH3

Synthesis

C3H8 + O2 CO2 + H2O

C3H8 + 5O23CO2 + H2O

Single replacement

K + H2O H2 + KOH

2K + 2H2O H2 + 2KOH

Single replacement

Li + O2 Li2O

4Li + O22Li2O

Synthesis

Ag + N2 Ag3N

6Ag + N2 2Ag3N

Synthesis

C2H5OH + O2 CO2 + H2O

C2H5OH + 3O2 2CO2 + 3H2O

Decomposition

The End !