A piece of sodium is burned in nitrogen.
3Na + N₂ → 2Na₃N
Hot iron is exposed to chlorine gas
2Fe + Cl₂ → 2FeCl₃
White phosphorus reacts with limited chlorine gas
P₄ + 6Cl₂ → 4PCl₃
White phosphorus reacts with excess chlorine gas
P₄ + 10Cl₂ → 4PCl₅
Sulfur dioxide gas is passed over solid calcium oxide.
SO₂ + CaO → CaSO₃
The gases boron trifluoride and ammonia are mixed.
BF₃ + NH₃ → H₃NBF₃
(Lewis Acid-Base reaction)
Nonmetal oxide + H₂O
Metal oxide + H₂O
Metal oxide + non-metal oxide
salt (of an oxyanion)
oxidation # of non-metal should not change (except for halogens)
Magnesium oxide is reacted with diphosphorus pentoxide
3MgO + P₂O₅ → Mg₃(PO₄)₂
(note: oxidation # of phosphorus is 5+ in P₂O₅ and in PO₄³⁻)
Sulfur dioxide gas is passed over magnesium oxide crystals
SO₂ + MgO → MgSO₃
(note: oxidation # of sulfur is 4+ in SO₂ and in SO₃²⁻)
Sulfur trioxide gas is passed over magnesium oxide crystals
SO₃ + MgO → MgSO₄
(note: oxidation # of sulfur is 6+ in SO₃ and in SO₄²⁻)
Barium oxide is added to water
BaO + H₂O → Ba²⁺ + 2OH⁻
(remember that Ba(OH)₂ is a strong base and must be represented as ions since this is a net ionic equation)
Aluminum oxide is added to water
Al₂O₃ + 3H₂O → 2Al(OH)₃
(aluminum hydroxide is a weak base and must be represented as a single compound - do not ionize it)
Magnesium oxide is exposed to a stream of carbon dioxide
MgO + CO₂ → MgCO₃
Magnesium oxide is heated in an atmosphere of sulfur dioxide gas
MgO + SO₂ → MgSO₃
Sulfur trioxide gas is blown over hot aluminum oxide
Al₂O₃ + SO₃ → Al₂(SO₄)₃
Metallic oxide plus carbon dioxide
Metallic oxide plus sulfur dioxide
Metallic oxide plus sulfur trioxide
Carbon dioxide gas is bubbled into water
H₂O + CO₂ ↔ H₂CO₃
(the equilibrium arrow is an important part of this answer)
Lithium is burned in oxygen
4Li + O₂ → 2Li₂O
Sulfur dioxide gas is added to solid calcium oxide
SO₂ + CaO → CaSO₃
Antimony tribromide is added to a container of liquid bromine
SbBr₃ + Br₂ → SbBr₅
Magnesium oxide is added to water
MgO + H₂O → Mg(OH)₂
Solid strontium oxide is added to dinitrogen pentaphosphorus
SrO + N₂O₅ → Sr(NO₃)₂
(note: the oxidation state of N in N₂O₅ is 5+ just like in NO₃⁻)
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.