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ACS CHEMISTRY GENERAL EXAM 2024-2025
ACTUAL EXAM WITH UPDATED QUESTIONS AND
VERIFIED ANSWERS (ALREADY GRADED A+)
According to the VSEPR model, the geometric structure of H2O is
- ANSWER-bent at an angle of 104.5 because of the greater
repulsion of two lone pairs relative to that of the two bonding pairs
Sulfur dioxide can be described by the structures shown. This
symbolism indicates that the - ANSWER-two bonds in SO2 are of
equal length, and the electronic distribution in the two sulfur-to-
oxygen bonds is identical
A compound consisting of an element having a low ionization
energy and a second element having a high electron affinity is
likely to have - ANSWER-ionic bonds
* results when atoms exchange electrons
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Sulfur dioxide can be described by the structures shown. This
symbolism indicates that the - ANSWER-two bonds in SO2 are of
equal length, and the electronic distribution in the two-sulfur-to-
oxygen bonds is identical
The compound CF3CHCIF is being considered as a replacement
for CBrF3, as a fire extinguishing agent because CBrF3 has been
shown to deplete stratospheric ozone. What are the most
probable products if a molecule of CF3CHCIF is bombarded with
high-energy photons? - ANSWER-CF3CHF + Cl
A simple method of showing experimentally that a solid substance
may be ionic is to show that is - ANSWER-conducts current when
dissolved in water
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For which molecule can the bonding be described in terms of sp3
hybrid orbitals of the central atom? - ANSWER-NH3
NH3 (pyramidal geometry) reacts with BF3 (planar geometry) to
form the additional compound, H3NBF3. What is the geometry
around the nitrogen and boron centers in the additional
compound? - ANSWER-both centers are tetrahedral
The molecule of the type ML4 consists of four single bonds and
no lone pairs? What structure is it expected to assume? -
ANSWER-tetrahedral
The shape that most closely describes the NF3 molecule is -
ANSWER-trigonal pyramidal
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In which pair are the molecules geometrically similar? -
ANSWER-SO2 and O3
Which is planar? - ANSWER-CO3^2-
Which is linear? - ANSWER-CCl4
Consider the given Lewis structure for BrF5. What is the predicted
shape for the molecule as a whole? - ANSWER-square pyramidal
What is the shape of the XeF4 molecule - ANSWER-square
planar
An atom of strontium-90 , 90/30 Sr, contains: - ANSWER-38
electrons, 38 protons, 52 neutrons
ACS CHEMISTRY GENERAL EXAM 2024-2025
ACTUAL EXAM WITH UPDATED QUESTIONS AND
VERIFIED ANSWERS (ALREADY GRADED A+)
According to the VSEPR model, the geometric structure of H2O is
- ANSWER-bent at an angle of 104.5 because of the greater
repulsion of two lone pairs relative to that of the two bonding pairs
Sulfur dioxide can be described by the structures shown. This
symbolism indicates that the - ANSWER-two bonds in SO2 are of
equal length, and the electronic distribution in the two sulfur-to-
oxygen bonds is identical
A compound consisting of an element having a low ionization
energy and a second element having a high electron affinity is
likely to have - ANSWER-ionic bonds
* results when atoms exchange electrons
,2|Page
Sulfur dioxide can be described by the structures shown. This
symbolism indicates that the - ANSWER-two bonds in SO2 are of
equal length, and the electronic distribution in the two-sulfur-to-
oxygen bonds is identical
The compound CF3CHCIF is being considered as a replacement
for CBrF3, as a fire extinguishing agent because CBrF3 has been
shown to deplete stratospheric ozone. What are the most
probable products if a molecule of CF3CHCIF is bombarded with
high-energy photons? - ANSWER-CF3CHF + Cl
A simple method of showing experimentally that a solid substance
may be ionic is to show that is - ANSWER-conducts current when
dissolved in water
,3|Page
For which molecule can the bonding be described in terms of sp3
hybrid orbitals of the central atom? - ANSWER-NH3
NH3 (pyramidal geometry) reacts with BF3 (planar geometry) to
form the additional compound, H3NBF3. What is the geometry
around the nitrogen and boron centers in the additional
compound? - ANSWER-both centers are tetrahedral
The molecule of the type ML4 consists of four single bonds and
no lone pairs? What structure is it expected to assume? -
ANSWER-tetrahedral
The shape that most closely describes the NF3 molecule is -
ANSWER-trigonal pyramidal
, 4|Page
In which pair are the molecules geometrically similar? -
ANSWER-SO2 and O3
Which is planar? - ANSWER-CO3^2-
Which is linear? - ANSWER-CCl4
Consider the given Lewis structure for BrF5. What is the predicted
shape for the molecule as a whole? - ANSWER-square pyramidal
What is the shape of the XeF4 molecule - ANSWER-square
planar
An atom of strontium-90 , 90/30 Sr, contains: - ANSWER-38
electrons, 38 protons, 52 neutrons
