1. Balance the following chemical equations:
a. ____SO2 + ____O2 ® ____SO3
b. ____CH4 + ____O2 ® ____CO + ____H2O
c. ____P + ____Cl2 ® ____PCl3
d. ____CO + ____O2 ® ____CO2
e. __FeCl2 + NaBr ® NaCl + FeBr2
f. ___CO2 + ____H2O ® ____C6H12O6 + ____O2
2. For a. through e. in problem 1, state the type of reaction that is occurring.
3. Write the formulas of the products and reactants in each of the following. Do not forget symbols to represent gas, liquid, etc
a. When a solution of hydrogen chloride is added to solid sodium bicarbonate (NaHCO3), the products are carbon dioxide, water, and aqueous sodium chloride.
b. Steam (gaseous water) reacts with carbon at high temperatures to produce carbon monoxide and hydrogen gases.
c. Limestone, CaCO3, decomposes when it is heated to produce lime, CaO, and gaseous carbon dioxide.
d. Ethyl alcohol (a liquid), C2H6O, burns in air to produce carbon dioxide and gaseous water.
e. Steel wool (nearly pure Fe) burns in air to form the solid iron oxide, Fe2O3.
f. During photosynthesis in plants, carbon dioxide and water are converted into glucose, C6H12O6, and oxygen gas.
4. Hydrogen fuel cells have been considered an alternative for a clean source of energy. In a fuel cell, hydrogen reacts with oxygen to produce water, and at the same time, it releases a great deal of energy. respond with a statement that addresses the chemical reaction of hydrogen fuel cells, the energy that is available from this reaction, and whether this type of alternative fuel is feasible.