Practice Quiz

SAT Chemistry - Question List

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146. Given the following experimental values, for the reaction A + B --> C, figure out the rate constant (k).

Initial values: [A] = 0.0100M; [B] = 0.0100M; Rate = 5.00 * 10-6 M/s
Experiment 1: [A] = .0200M; [B] = 0.100M; Rate = 2.50 * 10-5 M/s
Experiment 2: [A]= 0.0100M; [B]=0.0200M; Rate = 5.00 * 10-6 M/s
  1. k = 5.00 * 10-2 M*s
  2. k = 5.00 * 10-2/(M*s)
  3. k = 5.00 * 10-2/(M2*s)
  4. k = 5.00 * 10-3 M*s
  5. k = 5.00 * 10-3/(m*s)
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147. The following equation is under thermodynamic control. Assuming a temperature of 273K and using the provided information, find the Keq:

A + B --> C

DGf° (A) = -200 kJ/mol
DGf° (B) = -100 kJ/mol
DGf° (C) = -50 kJ/mol
  1. Keq = 1.46 * 10-14
  2. Keq = 1.46 * 10-38
  3. Keq = 1.46 * 10-48
  4. Keq = 0.83 * 10-27
  5. Keq = 0.83 * 10-32
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148. Which of the following is not true about complex ions?
  1. Complex ions are formed with a metal as the central atom
  2. The other molecules that bond to the metal are called ligands
  3. Ligands act as Lewis Acids
  4. The coordination number of a complex ion refers to the number of bonds the center atom forms
  5. All of the above are true
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149. In a galvanic cell (aka a voltaic cell), you have zinc and copper reacting. The shorthand version of these reactions is Zn|Zn+2| |Cu+2|Cu. Find the potential energy (Ecell°) of this battery.
  1. Ecell° = 0V
  2. Ecell° = -110V
  3. Ecell° =110V
  4. Ecell° = 0.42V
  5. Ecell° = -0.42V
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