5-1 Practice: Balancing Equations & Reaction Rates

1. Balancing Reactions Balance the following reactions by placing the appropriate coefficient in the blank. You will need to include the coefficient "1" in order for the key to come out as correct. 2 Sb + 3Cl2 → 2SbCl31CaCl2 → 1Ca + 1Cl21Mg(OH)2 + 2HCl → 1MgCl2 + 2H2O1Na2CO3 + 2HCl → 2NaCl + 1H2CO32N2 + 5O2 → 2N2O51C3H8 + 5O2 → 3CO2 + 4H2O2Al(OH)3 → 1Al2O3 + 3H2O4Li + 1O2 → 2Li2O6HCl + 1Fe2O3 → 2FeCl3 + 3H2O1MgCO3 → 1MgO + 1 CO21C2H6 + 7O2 → 4CO2 + 6H2O4H2 + 1Fe3O4 → 3Fe + 4H2O1(NH4)2CO3 → 2NH3 + 1 H2O + 1CO21Ba(CN)2 + 1H2SO4 → 1Ba2SO4 + 2HCN4P + 5O2 → 2P2O5 2. What does the reaction rate indicate about a chemical reaction? 3. According to the collision theory, what must happen in order for two molecules to react? (make sure to list all three points) 4. How do temperature, concentration, and surface area affect the rate of a chemical reaction (does the rate increase or decrease)? Use the collision theory to explain the effect. 5. What is a catalyst and how does adding a catalyst affect the reaction rate?