Ionic Compound Formula Writing
Sodium Chloride
NaCl
Water
H2O
When sodium metal reacts with chlorine gas (Cl₂), it forms sodium chloride (NaCl), commonly known as table salt. Write the unbalanced equation for this reaction.
Na+Cl2→NaCl
Unbalanced:C3H8+O2→CO2+H2O
Balanced: C3H8+5O2→3CO2+4H2O
Magnesium Oxide
MgO
Carbon Dioxide
CO2
Carbon reacts with oxygen to produce carbon monoxide (CO) when there is not enough oxygen for complete combustion. Write the unbalanced equation for the reaction between carbon and oxygen that produces carbon monoxide.
C+O2→CO
Unbalanced: Fe+O2→Fe2O3
Balanced: 4Fe+3O2→2Fe2O3
Calcium Sulfate
CaSO4
Ammonia
NH3
At a large outdoor event, a propane-fueled grill is used to cook various meats. During the grilling process, propane (C₃H₈) undergoes combustion in the presence of atmospheric oxygen to produce carbon dioxide and water. If the grill operates continuously for several hours, how would you write the unbalanced chemical equation representing the complete combustion of propane?
C3H8+O2→CO2+H2O
Unbalanced: Na+Cl2→NaCl
Balanced: 2Na+Cl2→2NaCl
Potassium Nitrate
KNO3
Glucose
C6H12O6
In a historical experiment, a scientist observes that when iron filings are exposed to moist air over time, they react with oxygen to form rust, which is primarily iron(III) oxide (Fe₂O₃). Write the unbalanced chemical equation for the reaction that occurs when iron reacts with oxygen in the air to form rust.
Fe+O2→Fe2O3
Unbalanced: C+O2→CO
Balanced: 2C+O2→2CO
Aluminum Chloride
AlCl3
Ethanol
C2H5OH
During a chemistry demonstration, a teacher shows how sodium metal reacts vigorously with chlorine gas (Cl₂) to produce sodium chloride (NaCl), commonly known as table salt. If the teacher uses multiple pieces of sodium and a sufficient amount of chlorine gas, write the unbalanced equation for this highly exothermic reaction.
C+O2→CO
Unbalanced: H2+O2→H2O
Balanced: 2H2+O2→2H2O