Chemistry 101    Quiz 11A        12/1/98        Dr. B. Jackson

151 - 152   Given
               2 SO2     +    O2    <------->   2SO3

At equilibrium the concentrations of the reactants and products are:
     [SO2] = 4.0 x 10-3mole/L      [O2] = 3.6 x 10-3 mole/L     [SO3] = 4.0 x 10-3 mole/L 

151.  What is the Keq?
     a) 3.6 x 10-3     b) 3.6 x 103     c) 2.8 x 10-2      d) 2.8 x 102

152.  If more SO2 were added, the Keq would
     a) increase     b) decrease     c) remain the same

153.  If a reaction has a Keq of 2.5 x 10-3, the reaction favors the
     a) reactants      b) product      

154. Sulfuric acid is a _____ acid.
     a) strong    b) weak    c) intermediate

155. What is the pH of a solution with a pOH of 5?
     a) 5     b) 9    c) 1 x 10-5    d) 1 x 10-9

156.  A solution has a pH of 3.  What is the hydrogen ion concentration?
     a) 1 x 10-3 M       b) 3 x 10-3 M      c) 0.003 M

157.  What is the pH of a 0.005 M HCl?
     a) 3    b) 5     c) 2.3    d) 11.7

158.  What is the pH of a 0.00006 M NaOH?
     a) 4.2    b) 9.8    c) 5     d) 6

159. Given a HCl solution with a pH of 4.6.  What is the H+ concentration?
     a) 2.5 x 10-5     b) 6.6 x 10-1     c) 4.0 x 104        d) 9.4

160.  What is the hydroxyl concentration of a NaOH solution with a pH of 2.8?
     a) 3.8 M     b) 6.3 x 10-12      c) 1.5 x 10-3      d) 11.2 M  

Ans: 151d; 152c; 153a; 154a; 155b; 156a; 157c; 158b; 159a; 160b