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CHEM103 / CHEM 103 Module 5:
(Latest Update 2025 / 2026) General Chemistry I with Lab | Questions & Answers | Grade A | 100% Correct - Portage Learning
Question:
Determine the electron geometry and explain your answer for the C atom in HCN.
Answer:
The C atom in HCN has 2 groups of electrons around it in its Lewis structure, therefore, its electron geometry would be linear.
Question:
Determine the hybridization and explain your answer for one of the C atoms in H2CCH2.
Answer:
The C atoms in H CCH has 3 groups of electrons around it in its Lewis structure, therefore, its hybridization would be sp2
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Question:
Determine the shape and explain your answer for H2CCH2
Answer:
The C atoms in H CCH has 3 groups of electrons around it in its Lewis structure, therefore, its electron geometry would be triangular planar and since there are 3 atoms around each central C atom, the shape would be triangular planar.
Question:
Use the electronegativities above and your knowledge of the shape of SiH to determine the molecular polarity of SiH explaining your answer in detail.
Answer:
The shape of SiH is tetrahedral and since the Si-H bonds are all nonpolar, SiH would be nonpolar since all the bonds are nonpolar.
SiH will have a tetrahedral shape because it has 4 electron pair groups occupied by each H surrounding the Si atom in the center. The polarity is NONPOLAR Electronegativity Calculation for Polarity Si = 1.8 H = 2.1 2.1 - 1.8
= .3 (NON POLAR)
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Question:
Is N Polar, Ionic or Nonpolar and List and Explain whether it is Soluble or Insoluble in Water?
Answer:
N has one nonpolar bond which makes it Nonpolar and since it is Nonpolar it is Insoluble in water
Question:
Arrange the following compounds in a vertical list from highest boiling point (top) to lowest boiling point (bottom) and explain your answer on the basis of whether the substance is Polar, Nonpolar, Ionic, Metallic or Hydrogen
bonding: LiF, Co, Cl , HF, HI
Answer:
Highest Boiling Point Co (metallic) = LiF (ionic material) HF (hydrogen bonding) HI (polar bond) Cl (nonpolar bond) Lowest Boiling Point
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