Practice Quiz

CLEP Chemistry Practice Test - Question List

Select how would you like to study

Study Mode Free Daily Question Test Mode
66. A chemical reaction is shown below:

Zn(s) + 2H+(aq) → Zn2+(aq) + H2(g)

Which of the following statements best explains why this chemical reaction is an oxidation-reduction reaction?
  1. Zn reacts under basic conditions.
  2. Zn dissolves in an aqueous solution.
  3. Zn and H+ undergo a change of state.
  4. Zn loses electrons and H+ gains electrons.
See answer
67. Which of the following statements describes the role of a buffer?
  1. It increases the rate of a reaction.
  2. It keeps the pH of a solution within a small range.
  3. It changes the oxidation states of elements in a compound.
  4. It shifts the reaction equilibrium to favor more product formation.
See answer
68. How many grams of KCl aredissolved in 2.00 L of a 0.200 M solution of KCl?
  1. 0.400 g
  2. 14.9 g
  3. 29.8 g
  4. 400 g
See answer
69. A sample of nitrogen (N2) gas in a10.0 L container has a pressure of 1.0 atm at 297 K. Assuming ideal gas behavior, what will the pressure be if the same amount of nitrogen gas is put into a 5.0 L container at 297 K?
  1. 0.40 atm
  2. 0.50 atm
  3. 2.0 atm
  4. 2.5 atm
See answer
70. The equation below shows a reaction at equilibrium:

2NO2(g) ↔ N2O4(g) + 58.8 kJ

What happens to the equilibrium if the temperature is increased?
  1. A new product will form.
  2. More NO2 will be formed.
  3. More N2O4 will be formed.
  4. The equilibrium will remain the same.
See answer

Select how would you like to study

Study Mode Free Daily Question Test Mode