Balance the following equation: N2 + O2 → N2O5. What is the coefficient of N2O5?
(2 N2 + 5 O2 → 2 N2O5)
What type of reaction is...
CH4 +2O2 -> CO2 + 2H2O
Combustion Reaction
A __________ tells us the materials needed and the products formed in a chemical reaction. It also represents the sentence in the language of chemistry. This communicates a chemical change using symbols and formulas to represent the elements and compounds involved in a chemical reaction.
Chemical equation
Magnesium chloride (MgCl) and sodium hydroxide (NaOH) react to form magnesium hydroxide Mg(OH)2 and sodium chloride (NaCl). What is the balanced chemical equation for this reaction?
MgCl2 + 2 NaOH → Mg(OH)2 + 2 NaCl
Reaction that breaks down compounds
Decomposition reaction
Write the net ionic equation for the following reaction.
FeCl2 (aq) + Zn (s) → ZnCl2 (aq) + Fe (s)
Fe2+ (aq) + 2 Cl- (aq) + Zn (s) → Zn2+ (aq) + 2 Cl- (aq) + Fe (s)
Fe2+ (aq) + Zn (s) → Zn2+ (aq) + Fe (s)
Copper (II) sulfate reacts with Zn metal to produce Cu metals and Zinc sulfate. What is the balanced chemical equation for this reaction?
CuSO4 + Zn → Cu + ZnSO4
What type of reaction is this?
CaI2 (s) + Cl2 (g) → CaCl2 (s) + I2 (s)
Single-Displacement reaction
Hydrogen gas and chlorine gas react to form Hydrochloric Acid (HCl). What is the balanced chemical equation for this reaction?
H2 + Cl2 → 2 HCl
NOTE: Hydogen gas and chlorine gas are diatomic molecules.
What kind of reaction is this ?
Na2SO4 (aq) + SrCl2 (aq) → SrSO4 (s) + 2 NaCl (aq)
Double-Displacement Reactions
Write the net ionic equation for the following reaction.
Na2SO4 (aq) + SrCl2 (aq) → SrSO4 (s) + 2 NaCl (aq)
2 Na+ (aq) + SO42- (aq) + Sr2+ (aq) + 2 Cl- (aq) → SrSO4 (s) + 2 Na+ (aq) + 2 Cl- (aq)
Sr2+ (aq) + SO42- (aq) → SrSO4 (s)
What is the coefficient of O2 after balancing the following equation: C2H6 + O2 → H2O + CO2
7
(2 C2H6 + 7 O2 → 6 H2O + 4 CO2)
What would you call when a solid salt dissolves, the (+) ends of water molecules
associate with the anion, and the (-) ends of water molecules associate with the cation
Ionic equation
What is the official animal of Scotland?
Unicorn