Practice Quiz

SAT Chemistry - Question List

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86. CH3COOH + H2O --> CH3COO- + H3O+

Which of the following descriptions best characterizes CH3COO- in the reaction above?
  1. Cation
  2. Conjugate acid
  3. Conjugate base
  4. Indicator
  5. Neutral species
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87. Which of the following species is isoelectronic with krypton?
  1. K+
  2. Se-
  3. Br-
  4. Ar
  5. I-
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88. Which of the following is the correct molecular formula for magnesium phosphate?
  1. MgPO4
  2. Mg3(PO4)2
  3. Mg(PO4)2
  4. MgP
  5. MgP2
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89. Consider the following system at equilibrium:

2NOCl(g) <--> 2NO(g) + Cl2(g)

According to Le Chatelier’s principle, what will occur when the equilibrium concentration of NOCl(g) is reduced?
  1. The equilibrium concentration of NO(g) alone decreases
  2. The equilibrium concentration of Cl2(g) alone decreases
  3. The equilibrium concentrations of both NO(g) and Cl2(g) decrease
  4. The equilibrium concentration of NO(g) alone increases.
  5. There will be no effect on the concentrations of NO(g) and Cl2(g)
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90. Which of the following descriptions most accurately characterizes the molecular geometry of H2O?
  1. Linear
  2. Trigonal planar
  3. Trigonal pyramidal
  4. Bent
  5. Tetrahedral
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