Questions and Answers
Determine the electron geometry and molecular geometry of CH3OH.
eg=tetrahedral, mg=tetrahedral
On a phase diagram, the fusion curve is between what states?
a solid and a liquid
Choose the statement below that is true:
Determine the molecular geometry of CH2CCCl.
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How does soap remove oil?
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How much heat is released when 115 g of steam at 100°C is cooled to ice at -15.0°C?
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What type of intermolecular force causes the dissolution of CaCl2 in water?
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What is the approximate bond angle for a molecule that is linear?
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A molecule with a trigonal bipyramidal molecular geometry has bond angles of?
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What hybrid orbital set is used by the central atom in H3O+?
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Choose the substance with the highest boiling point:
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What is the hybridization for the Br in BrCl3?
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Describe a pi bond.
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Place the following compounds in order of increasing strength of intermolecular forces.
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Study Notes
Electron and Molecular Geometry
- CH3OH has a tetrahedral electron geometry and tetrahedral molecular geometry.
Phase Diagrams
- The fusion curve on a phase diagram separates solid and liquid phases.
Solution Formation
- Solutions form when solute-solvent interactions are comparable to solute-solute and solvent-solvent interactions.
Molecular Geometry of CH2CCCl
- CH2CCCl has a trigonal planar molecular geometry; both parts exhibit tetrahedral geometry.
Soap Functionality
- Soap removes oil by surrounding the oil with its nonpolar end and the water with its polar end.
Heat Calculation
- Cooling 115 g of steam at 100°C to ice at -15.0°C releases approximately 350 kJ of heat.
Intermolecular Forces
- The dissolution of CaCl2 in water is caused by ion-dipole intermolecular forces.
Bond Angles
- A linear molecule exhibits a bond angle of 180 degrees.
Trigonal Bipyramidal Geometry
- In a trigonal bipyramidal molecular geometry, equatorial bond angles are 120 degrees and axial bond angles are 90 degrees.
Hybridization in H3O+
- The central atom in H3O+ uses sp3 hybridization.
Boiling Point Comparison
- NaBr has the highest boiling point compared to other substances.
Hybridization of Bromine in BrCl3
- Bromine in BrCl3 has an sp3d2 hybridization.
Description of Pi Bond
- A pi bond is formed by the side-by-side overlap of atomic orbitals.
Strength of Intermolecular Forces
- Order of increasing strength of intermolecular forces among substances begins with CH4.
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Description
Prepare for your Chemistry Exam 4 with these flashcards that cover key concepts such as electron geometry, phase diagrams, and solution formation. Each card presents essential definitions and statements to help reinforce your understanding and retention of the material.
