AP Chapter 4 Practice Test
You will have one hour to answer 13 problems similar to these…
1. The products of the complete combustion of a hydrocarbon are carbon
dioxide and water. Write a balanced chemical equation for the
combustion of butane, C4H10.
2C4H10 + 13O2  8CO2 + 10H2O
2. What mass of carbon is needed to react completely with 23.14 grams of
SiO2 according to the following equation?
SiO2(s) + 3 C(s)  SiC(s) + 2 CO(g)
13.88 grams C
3. What mass of oxygen is consumed by the complete combustion of 25.0
grams of acetylene?
2 C2H2(g) + 5 O2(g)  4 CO2(g) + 2 H2O(g)
76.9 grams O2
4. Nitroglycerine decomposes violently according to the unbalanced
chemical equation below. How many total moles of gases are produced
from the decomposition of 1.00 mol C3H5(NO3)3?
C3H5(NO3)3(l)  CO2(g) + N2(g) + H2O(g) + O2(g)
7.25 moles of gas
4C3H5(NO3)3  12CO2 + 6N2 + 10H2O + O2
5. How many liters of 0.1107 M NaOH contain 10.00 g of NaOH?
2.26L NaOH
6. A 25.00 mL sample of NaOH is titrated with 15.23 mL of 0.2250 M HCl.
What is the concentration of the NaOH solution?
0.137M NaOH
7. What is the pH of 0.36M HCl?
pH = 0.44
8. What is the hydroxide ion concentration in problem #7?
[OH-] = 2.78 x 10-14