Practice Quiz

CLEP Chemistry Practice Test - Question List

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106. Which element has the electron configuration 1S22S2P3?
  1. boron
  2. nitrogen
  3. fluorine
  4. phosphorus
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107. The compound Mg(OH)2 is classified as an Arrhenius base because, when the compound dissolves in water, there is an increase in the concentration of which of the following ions?
  1. hydrogen ions
  2. hydroxide ions
  3. magnesium ions
  4. oxide ions
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108. Which of the following statements explains what happens to the gas inside a balloon as the external pressure on the balloon decreases and the temperature stays constant?
  1. The volume increases.
  2. The volume decreases.
  3. The molecular speed increases.
  4. The molecular speed decreases.
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109. When pure N2O5 is heated under certain conditions, O2 and NO2 are produced. What type of reaction is this?
  1. combustion
  2. decomposition
  3. double displacement
  4. synthesis (combination)
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110. The equation below shows the reaction of chloroform (CHCl3) with hydrogen (H2) to produce methane (CH4) and chlorine (Cl2):

2CHCl3(g) + 3H2(g) + heat ↔ 2CH4(g) + 3Cl2(g)

Which of the following changes will shift the equilibrium to the right, producing more methane?
  1. raising the temperature of the reaction
  2. lowering the concentration of hydrogen
  3. increasing the total pressure of the gases
  4. increasing the volume of the reaction vessel
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