Free CLEP Science and Mathematics Exam Braindumps (page: 33)

Page 32 of 128

What is the geometry of NH3?

  1. Linear
  2. Tetrahedral
  3. Octahedral
  4. Trigonal-pyramidal
  5. Trigonal-bipyramidal

Answer(s): D

Explanation:

In ammonia there are three ligands and one pair of nonbonding electrons



What is the geometry of SF6?

  1. Linear
  2. Tetrahedral
  3. Octahedral
  4. Trigonal-pyramidal
  5. Trigonal-bipyramidal

Answer(s): C

Explanation:

Octahedral complexes form when there are six ligands.



What type of reaction is HCl(aq) - NaOH(aq) ?

  1. Acid-base reaction
  2. Nuclear reaction
  3. Combustion reaction
  4. Precipitation reaction
  5. No reaction

Answer(s): A

Explanation:

HCl acts as an acid and NaOH acts as a base to produce NaCl(aq) and H2O.



What type of reaction is CH3CH2OH + O2 ?

  1. Acid-base reaction
  2. Nuclear reaction
  3. Combustion reaction
  4. Precipitation reaction
  5. No reaction

Answer(s): C

Explanation:

A hydrocarbon burning in oxygen is a combustion reaction. The products are always CO2 and H2O.






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