Vocabulary
molecular equation
show balanced, neutral species
What is a redox reaction?
Also known as an oxidation-reduction reaction; one reactant is oxidized and the other is reduced
HCl + NaOH -->
H2O + NaCl
2 HCl --> H2 + 2 Cl
decomposition
complete ionic equations
show all ions that separate in solution
What happens to something that is oxidized?
It loses electrons
HNO3 + NaOH -->
H2O + NaNO3
Mg (s) + Cl2 (g) --> MgCl2
redox, synthesis (combination)
spectator ions
do not participate in the net reaction
What happens to something that is reduced?
It gains electrons
2 HCl + Mg(OH)2 -->
2 H2O + MgCl2
CaCO3 --> CaO + CO2
decomposition
net ionic equation
show only ions that react
Mg (s) + 2 F (g) --> MgF2 (s)
Which is oxidized? Which is reduced?
Magnesium is oxidized, fluorine is reduced
HNO3 + LiOH -->
H2O + LiNO3
Ca + 2 HBr--> CaBr2 + H2
acid vs. base
acid: produced H+ in aqueous solutions
base: produced OH- in aqueous solutions
Be (s) + 2 Cl (g) --> BeCl2
Which is oxidized? Which is reduced?
Beryllium is oxidized, chlorine is reduced
H2SO4 + 2 NaOH -->
2 H2O + Na2SO4
4 Fe (s) + 3 O2 (g) --> 4 Fe2O3 (s)
synthesis (combination), redox