Name ________________________________________________________
Unit 6: Chemical Reactions
Date ________________________________
Part 2 Questions
1. Balance the equation below using the smallest whole number coefficients.
______ C3H8 (g) + ______ O2 (g)  ______ H2O (g) + ______ CO2 (g)
2. Balance the equation below using the smallest whole number coefficients.
______ Al(OH)3 + ______ H2SO4  ______ Al2(SO4)3 + ______ H2O
3. Balance the equation below using the smallest whole number coefficients.
______ C5H12 (g) + ______ O2 (g)  ______ H2O (g) + ______ CO2 (g)
4. A. Write and balance the reaction that occurs between hydrogen and chlorine to form
hydrogen chloride.
B. What type of reaction does this equation represent?
5. Base your answers to the following questions on the equation below.
_______ H2O  _______ H2 + ______ O2
A. Balance the reaction above using the smallest whole number coefficients.
B. What type of reaction does this equation represent?
C. How does the balanced chemical equation show the Law of Conservation of Mass?
6. The reaction between aluminum and an aqueous solution of copper (II) sulfate is
represented by the unbalanced equation below.
_______ Al (s) + ______ CuSO4 (aq)  _______ Al2(SO4)3 (aq) + ______ Cu (s)
A. Identify the type of chemical reaction represented by the equation.
B. Balance the equation above, using the smallest whole number coefficients.
C. What is the sum of the coefficients in the balanced equation above?
D. Explain why the equation represents a chemical change.
E. Determine the total mass of Cu produced when 1.08 grams of Al reacts completely with
9.58 grams of CuSO4 to produce 6.85 grams of Al2(SO4)3.
7. Complete and balance the equations below by writing the formulas for the products.
A.
______ Zn + ______ HCl 
B.
______ Ag + ______ Cu(NO3)2 
8. In a laboratory investigation, a solution that contains 13.2 grams of Pb(NO 3)2 reacts
completely with a solution that contains 12.0 grams of NaI, producing 18.4 grams of PbI2
and an undetermined mass of a second product, NaNO3. This reaction is represented by
the balanced equation below.
Pb(NO3)2 + 2 NaI  PbI2 + 2 NaNO3
A. Identify the type of chemical reaction represented by the equation.
B. Identify the compound produced that is insoluble in water.
C. Determine the mass of NaNO3 produced.
9. Complete and balance the equations below by writing the formulas for the products.
A.
______ Mg(OH)2 + ______ HCl 
B.
______ Ba(NO3)2 + ______ Na2SO4 
10. Complete and balance the equations below by writing the formulas for the products.
Indicate if the products are soluble or insoluble.
A.
______ Pb(NO3)2 (aq) + ______ HCl (aq) 
B.
______ Na2CO3 (aq) + ______ KF (aq) 
C.
______ AgNO3 (aq) + ______ CuSO4 (aq) 