Reactions in Aqueous Solutions

Chapter 7

• Synthesis – 1 product• Decomposition – 1 reactant• Single displacement – 1 element & 1 compound

react to produce a different element & a different compound

• Double displacement – 2 compounds react to form two different compounds.

• Neutralization – acid and base in the reactants & water as one of the products.

• Combustion – O2 as a reactant & CO2 and H2O as the products.

Determining Types of Reactions

• Synthesis – two or more reactants and only 1 product.

• H2(g) + O2(g) H2O(l)

• Na(s) + Cl2(g) NaCl(s)

Determining the type of reaction

• Decomposition – only 1 reactant and 2 or more products.

• 2 HgO(l) 2 Hg(l) + O2(g)

• NaHCO3(s)Na2CO3(s)+ H2O(l) + CO2(g)

Determining the type of reaction

• Single displacement – 1 element and 1 compound in the reactants and a different element and a different compound in the products.

• CuCl2(aq) + Mg(s) MgCl2(aq) + Cu(s)

• KCl(aq) + F2(g) KF(aq) + Cl2(g)

Determining the type of reaction

• Double displacement - two compounds in the reactants and two different compounds in the products.

• FeCl3(aq)+MgSO4(aq)Fe2(SO4)3(s)+MgCl2(aq)

• NaCl(aq) + AgNO3(aq) NaNO3(aq) + AgCl(s)

Determining the type of reaction

• Neutralization (acid-base) – an acid and a base in the reactants and water as one of the products.

• HCl(aq) + NaOH(aq) NaCl(aq) + H2O(l)

acid base

• Ca(OH)2(aq) + H3PO4(aq) H2O(l) +Ca3(PO4)2(aq)

base acid

Determining the type of reaction

• Combustion – a hydrocarbon and oxygen as a reactants and carbon dioxide and water as the only products.

• CH4(g) + O2(g) CO2(g) + H2O(g)

• C8H18(g) + O2(g) CO2(g) + H2O(g)

Determining the type of reaction

• Determine the type of reaction for each of the following examples:

• PbCl2(aq) + KClO3(aq) Pb(ClO3)2(aq) + KCl(aq)

• K(s) + F2(g) KF(aq)

• LiOH(aq) + H2SO4(aq) H2O(l) +Li2(SO4)2(aq)

• C6H12O6(aq) CO2(g)+ H2O(g)

• C3H8(g) + O2(g) CO2(g) + H2O(g)

• MgBr2(aq) + Cl2(g) MgCl2(aq) + Br2(l)

More Examples