Podcast
Questions and Answers
Which covalent bond is the most polar?
Which covalent bond is the most polar?
What is the distance between atoms in BrCl?
What is the distance between atoms in BrCl?
214 pm
Which covalent bond is the most polar?
Which covalent bond is the most polar?
Which of the following exhibits ion-dipole forces?
Which of the following exhibits ion-dipole forces?
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Which has the smallest dipole-dipole forces?
Which has the smallest dipole-dipole forces?
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Which of the following compounds has the highest boiling point?
Which of the following compounds has the highest boiling point?
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Which of the intermolecular forces is the most important contributor to the high surface tension shown by water?
Which of the intermolecular forces is the most important contributor to the high surface tension shown by water?
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Of C2H5OH and C3H5(OH)3, the one expected to have the higher viscosity is ________, and the one expected to have the higher surface tension is ________.
Of C2H5OH and C3H5(OH)3, the one expected to have the higher viscosity is ________, and the one expected to have the higher surface tension is ________.
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Which of the following phase changes has a positive value for its entropy change?
Which of the following phase changes has a positive value for its entropy change?
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How much heat is released when 75.0 g of steam at 100.0°C is cooled to ice at -15.0°C?
How much heat is released when 75.0 g of steam at 100.0°C is cooled to ice at -15.0°C?
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How much energy (in kilojoules) is released when 14.0 g of steam at 119.5°C is condensed to give liquid water at 65.0°C?
How much energy (in kilojoules) is released when 14.0 g of steam at 119.5°C is condensed to give liquid water at 65.0°C?
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Which of the following substances has the highest boiling point?
Which of the following substances has the highest boiling point?
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Solids having no ordered long-range structure are classified as?
Solids having no ordered long-range structure are classified as?
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The wavelength of light used to observe an object must be ________ than the object itself.
The wavelength of light used to observe an object must be ________ than the object itself.
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Layers of atoms having a spacing of 105 pm will diffract X-rays with d = 154.2 pm at an angle of ________ degrees.
Layers of atoms having a spacing of 105 pm will diffract X-rays with d = 154.2 pm at an angle of ________ degrees.
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Which type of spherical packing has the most unused space?
Which type of spherical packing has the most unused space?
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How many atoms are in one body-centered cubic unit cell of a metal?
How many atoms are in one body-centered cubic unit cell of a metal?
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Silver crystallizes in a face-centered cubic structure. What is the edge length of the unit cell if the atomic radius of silver is 144 pm?
Silver crystallizes in a face-centered cubic structure. What is the edge length of the unit cell if the atomic radius of silver is 144 pm?
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What is a unit cell?
What is a unit cell?
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Which transition could occur if a solid is heated at a pressure below the triple point pressure?
Which transition could occur if a solid is heated at a pressure below the triple point pressure?
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A supercritical fluid refers to a substance?
A supercritical fluid refers to a substance?
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Study Notes
Covalent Bonds and Polarization
- The most polar covalent bond identified is C—F.
- The Br—Cl bond has 5.05% ionic character and a dipole moment of 0.518 D, with an interatomic distance of 214 pm.
- Another highly polar bond is B—N.
Intermolecular Forces
- Ion-dipole forces occur in NaCl(aq).
- N2 exhibits the smallest dipole-dipole forces.
- The highest boiling point among selected compounds is H2O due to strong intermolecular interactions.
- Hydrogen bonding is the major contributor to water's high surface tension.
Molecular Properties and Viscosity
- C3H5(OH)3 is expected to have higher viscosity and surface tension compared to C2H5OH.
- Boiling water has a positive entropy change.
Heat Calculations
- Cooling 75.0 g of steam at 100.0°C to ice at -15.0°C results in the release of 228 kJ of heat.
- Energy released when condensing 14.0 g of steam at 119.5°C to liquid water at 65.0°C requires heat of vaporization and molar heat capacities.
Boiling Points and Molecular Structure
- Among hydrocarbons, CH3-CH2-CH2-CH2-CH3 has the highest boiling point.
- Solids lacking ordered long-range structure are termed amorphous.
Light and Diffraction
- Light's wavelength must be smaller than the object being observed for effective visualization.
Atomic Packing and Unit Cells
- Simple cubic packing has the highest unused space compared to other packing types.
- A body-centered cubic unit cell contains 2 atoms.
- For silver in a face-centered cubic structure, with an atomic radius of 144 pm, the unit cell edge length is calculated to be 407 pm.
- The unit cell is defined as the smallest repeating unit in a crystal.
Phase Changes and Critical Conditions
- When heated below the triple point pressure, solids can undergo sublimation.
- A supercritical fluid exists above both its critical temperature and critical pressure.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of covalent bonds and their polarity with these flashcards based on Chapter 10 of your chemistry course. Challenges include determining the most polar covalent bonds and calculating properties like ionic character and atomic distance. Perfect for students preparing for exams!
