Question 1Which of the following correctly describes the influence of intermolecular forceson the properties of matter?1. Intermolecular forces determine the solubility of gases,liquids, and solids in various solvents.2. Intermolecular forces are directly related to the energyrequired to accomplish phase changes.3. Intermolecular forces do not influence the structure ofmolecules like DNA and proteins.a) 1 onlyb) 2 onlyc) 3 onlyd) 1 and 2e) 1, 2 and 3Question 2Place the following cations in order from the most negative to the least negativehydration enthalpy: H*, Rb*, and Li*.a) Rb* < Lit < H*b) Rb* < H* < Li*c) H* < Li* < Rb*d) H* < Rb* < Li*e) Li* < H* < Rb*Question 3The normal boiling points of some group 7A hydrides are tabulated below.gasHFHCIb.p. (°C)19.7-84.8HBr-66.4Which intermolecular force or bond is responsible for the high boiling point of HFrelative to HCI and HBr?a) hydrogen bondingb) dipole/induced dipole forcec) induced dipole/induced dipole forced) covalent bondinge) dipole-dipole force Question 4Which of the following statements is/are CORRECT? If an ionic compound withthe formula MX forms a face-centered cubic unit cell with the anions (Xn) at thelattice points, the cations (Mn*) may occupy1. one fourth of the tetrahedral holes in each unit cell.2. all of the octahedral holes in each unit cell.3. the center of each face in each unit cell.a) 1 onlyb) 2 only2c) 3 onlyd) 1 and 2e) 1, 2, and 3Question 5Strontium oxide has a face centered cubic unit cell of oxide ions with thestrontium in octahedral holes. If the radius of Sr2* is 127 pm and the density ofSro is 4.7 g/cm', what is the radius of the oxide ion? (100 cm = 1 x 1012 pm)a) 176 pmb) 132 pmc) 127 pmd) 137 pme) 273 pmQuestion 6The lattice energy of NaBr is -752 kJ/mol. This energy corresponds to whichreaction below?a) Na(s) + 1/2 Br2(g) NaBr(s)b) Na(g) + Br(g) - NaBr(s)c) Na(g) + Br(g) NaBr(s)d) Na*(g) + Br(g) NaBr(s)e) Na*(aq) + Br (aq) NaBr(s)

Intermolecular interactions between individual molecules in a chemical entities are important…

Which of the following correctly describes the influence of intermolecular forces on the properties of matter? 1. Intermolecular forces determine the solubility of gases, liquids, and solids in various solvents. 2. Intermolecular forces are directly related to the energy required to accomplish phase changes. 3. Intermolecular forces do not influence the structure of molecules like DNA and proteins. a) 1 only b) 2 only c) 3 only d) 1 and 2 e) 1,2 and 3 Question 2 Place the following cations in order from the most negative to the least negative hydration enthalpy: H*, Rb*, and Li". a) Rb* < Lit < H*

Which of the following correctly describes the influence of intermolecular forces on the properties of matter? 1. Intermolecular forces determine the solubility of gases, liquids, and solids in various solvents. 2. Intermolecular forces are directly related to the energy required to accomplish phase changes. 3. Intermolecular forces do not influence the structure of molecules like DNA and proteins. a) 1 only b) 2 only c) 3 only d) 1 and 2 e) 1,2 and 3 Question 2 Place the following cations in order from the most negative to the least negative hydration enthalpy: H, Rb, and Li". a) Rb* < Lit < H*

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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17. A substance with stronger intermolecular forces is expected to have lower: A) molar mass B) chemical particles size C) surface tension D) vapor pressure
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1. What is a chemical bond? How is it different from intermolecular forces of attraction?2. How is polarity related to the formation of intermolecular forces of attraction?3. Define the following weak intermolecular forces of attraction:a. Hydrogen bondb. Dipole-dipole interactionc. Ion-dipole interactiond. Electrostatic attractione. Van der Waals interaction4. It is common knowledge that most solids are denser than liquids. Within the context of intermolecular forces, how can you explain the phenomenon when solid ice floats in water?
How do intermolecular forces determine the physical properties of a molecule?
Which of the following molecules has the higher AHvap (the amount of energy needed to change the substance from a liquid to a gas) and why? A They both have the same Hvap, because they have the same type of intermolecular force. AHvap is temperature dependent, so it depends on the temperature. A, because it has stronger intermolecular forces, requiring more energy to overcome the intermolecular forces. B, because it has stronger intermolecular forces, requiring more energy to overcome the intermolecular forces. Not enough information is given.
20. In the table, below, for each of the substances listed under the "Molecule" column, list it's dominant intermolecular force next to it in the "Intermolecular Force" column. Molecule Intermolecular Force HF CH:l: CHe SO: NF3 CO: CF4