unit seven: single & double replacement reactions

Single Replacement Reaction

• when one atom replaces another atom.

• metals can replace metals (SOMETIMES)

• nm can replace nm

• ex: AB + C = A + BC

A metal can replace another IF…

…the activity of the first metal is higher than the other. (on chart!)

Single Replacement Example

Cl2 (aq) + NaI (aq) = NaCl (aq) + I2

Double Replacement Reaction

• AB + CD = AD + CB

• ex: NaC2H3O2 + Al2O3 = Na2O + Al (C2H3O2)

Double Replacement Example

K2CO3 (aq) + 3AgNO3 (aq) = Cu (NO3)3 (aq) 3Ag (s)

Acids & Bases

• Acids begin with H

• Base ends with OH

• IONIC SALT and WATER are products

• ex: HCL (aq) + NaOH (aq) = H2O (l) + NaCl (aq)

Acid & Base Reaction

H2SO4 (aq) + Ca (OH)2 (aq) = 2H2O (l) + CaSO4 (aq)