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14. Which of the following exhibits dipole-dipole attraction between molecules? (EN: F = 4.0; 0 -...
Which of the following compounds exhibits dipole-dipole forces as its strongest attraction between molecules? He BrCH2CH2OH...
Which of the following compounds exhibits dipole-dipole forces as its strongest attraction between molecules? He BrCH2CH2OH OCC14 CHzBr 02 Calculate the AGºrxn using the following information. 2HNO3(aq) + NO(g) + 3NO2(g) + H20 (1) AG rxn = ? AG°f(kJ/mol)= -110.9 87.6 51.3 -237.1 O +162.5 kJ O +51.0 kJ O-74.9 kJ O +54.5 kJ -87.6 kJ What is the pH of 0.626 Manilinium hydrochloride (C6H5NH3Cl) solution in water, given that Kb for aniline is 3.83 10-4? 8.61 1.81 O 5.39...
Which of the following statements is FALSE? O When a substance melts, some - but not...
Which of the following statements is FALSE? O When a substance melts, some - but not all-of the intermolecular forces are disrupted O When a substance evaporates, all of the intermolecular forces are disrupted O A compound with stronger intermolecular forces will have a higher boiling point The enthalpy of sublimation is less than the enthalpy of vaporization but more than the enthalpy of fusion O The enthalpy of vaporization for a compound is greater than the enthalpy of fusion...
8:59 Question 14 of 16 Submit Which of the following exhibits dipole-dipole intermolecular forces? A) BF...
8:59 Question 14 of 16 Submit Which of the following exhibits dipole-dipole intermolecular forces? A) BF B) CO2 C) NH, D) Brz E) CF.
A) TRUE B) FALSE U. Heats of vaporization are greater than heats of fusion 800 34.6°C...
A) TRUE B) FALSE U. Heats of vaporization are greater than heats of fusion 800 34.6°C 760 783C 10 Normal boiling 600 Diethyl/ point Ethyl alcohol (ethanol) Water Ethylene glycol 20 40 60 80 100 Temperature (00 11. Based on the figure above, the boiling point of diethyl ether under an external pressure of 0.605 atm is A40 B) 10 C) 30 D) 20 E) 0 12. What is the predominant intermolecular foree in HCN? A) dipole-dipole attraction B) ion-dipole...
ID: 10. Identify the place which has the highest boiling point of water, a Death Valley,...
ID: 10. Identify the place which has the highest boiling point of water, a Death Valley, 282 feet below sea level b. A pressurized passenger jet, 39,000 feet C. Panama City, Florida, sea level d. Mt. Everest, 29,035 feet c. Denver, Colorado, 5,280 feet d. Minha City, Florcnger jet. c. Der Everest, 29 onda, sea le 39,000 feet 11. The heat of vaporization of water at 100°C is 40.66 kJ/mol Calculate the quantity of heat that is absorbed released when...
14 Which of the following is true if a molecule possesses lone pairs on the central...
14 Which of the following is true if a molecule possesses lone pairs on the central atom but is not hydrogen bonded? (A) the molecule will have a hydrogen bonded directly to an N, O, or F (B) the molecule will be nonpolar (C) the molecule will be an ionic crystal lattice structure where there are strong clectrostatic (D) the molecule will be polar 15 A substance with strong intermolecular forces will have (A) low boiling point (B) high reactivity...
0 0 6. The melting point of NH3 is 195 K. The boiling point of NH3...
0 0 6. The melting point of NH3 is 195 K. The boiling point of NH3 is 240 K. In order to determine the amount of energy required to raise a certain quantity of NH3 from 200 K to 230 K, we need to use values of which thermal properties of NH3? a) heat of vaporization b) heat of fusion c) heat capacity of liquid ammonia d) heat capacity of ammonia vapor e) some two of the above types 7....
1. Some solids can be converted directly to the vapor phase by heating. The process is...
1. Some solids can be converted directly to the vapor phase by heating. The process is called: a) Fusion b) sublimation c) vaporization d) condensation e) distillation 2. Which one of the following substances is INCORRECTLY matched with the kind of solid it forms? Substance Kind of Solid a) Sulfur dioxide molecular b) Graphite covalent c) Calcium bromide ionic d) Lithium ionic e) Methane molecular 3. Arrange the following in order of increasing melting points: KCl, He, H2O, HF. a)...
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS...
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, on...
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, one would predict that a. AG is positive for all temperatures. d. AH is - and AS is for the reaction. b. AH is + and AS is for the reaction. e. AH is + and AS' is- for the reaction. c. AH is - and AS is for the reaction. 9. Calculate the standard absolute entropy, in J/mol K. of Mg:...
Which of the following compounds exhibits dipole-dipole forces as its strongest attraction between molecules? He BrCH2CH2OH OCC14 CHzBr 02 Calculate the AGºrxn using the following information. 2HNO3(aq) + NO(g) + 3NO2(g) + H20 (1) AG rxn = ? AG°f(kJ/mol)= -110.9 87.6 51.3 -237.1 O +162.5 kJ O +51.0 kJ O-74.9 kJ O +54.5 kJ -87.6 kJ What is the pH of 0.626 Manilinium hydrochloride (C6H5NH3Cl) solution in water, given that Kb for aniline is 3.83 10-4? 8.61 1.81 O 5.39...
Which of the following statements is FALSE? O When a substance melts, some - but not all-of the intermolecular forces are disrupted O When a substance evaporates, all of the intermolecular forces are disrupted O A compound with stronger intermolecular forces will have a higher boiling point The enthalpy of sublimation is less than the enthalpy of vaporization but more than the enthalpy of fusion O The enthalpy of vaporization for a compound is greater than the enthalpy of fusion...
8:59 Question 14 of 16 Submit Which of the following exhibits dipole-dipole intermolecular forces? A) BF B) CO2 C) NH, D) Brz E) CF.
A) TRUE B) FALSE U. Heats of vaporization are greater than heats of fusion 800 34.6°C 760 783C 10 Normal boiling 600 Diethyl/ point Ethyl alcohol (ethanol) Water Ethylene glycol 20 40 60 80 100 Temperature (00 11. Based on the figure above, the boiling point of diethyl ether under an external pressure of 0.605 atm is A40 B) 10 C) 30 D) 20 E) 0 12. What is the predominant intermolecular foree in HCN? A) dipole-dipole attraction B) ion-dipole...
ID: 10. Identify the place which has the highest boiling point of water, a Death Valley, 282 feet below sea level b. A pressurized passenger jet, 39,000 feet C. Panama City, Florida, sea level d. Mt. Everest, 29,035 feet c. Denver, Colorado, 5,280 feet d. Minha City, Florcnger jet. c. Der Everest, 29 onda, sea le 39,000 feet 11. The heat of vaporization of water at 100°C is 40.66 kJ/mol Calculate the quantity of heat that is absorbed released when...
14 Which of the following is true if a molecule possesses lone pairs on the central atom but is not hydrogen bonded? (A) the molecule will have a hydrogen bonded directly to an N, O, or F (B) the molecule will be nonpolar (C) the molecule will be an ionic crystal lattice structure where there are strong clectrostatic (D) the molecule will be polar 15 A substance with strong intermolecular forces will have (A) low boiling point (B) high reactivity...
0 0 6. The melting point of NH3 is 195 K. The boiling point of NH3 is 240 K. In order to determine the amount of energy required to raise a certain quantity of NH3 from 200 K to 230 K, we need to use values of which thermal properties of NH3? a) heat of vaporization b) heat of fusion c) heat capacity of liquid ammonia d) heat capacity of ammonia vapor e) some two of the above types 7....
1. Some solids can be converted directly to the vapor phase by heating. The process is called: a) Fusion b) sublimation c) vaporization d) condensation e) distillation 2. Which one of the following substances is INCORRECTLY matched with the kind of solid it forms? Substance Kind of Solid a) Sulfur dioxide molecular b) Graphite covalent c) Calcium bromide ionic d) Lithium ionic e) Methane molecular 3. Arrange the following in order of increasing melting points: KCl, He, H2O, HF. a)...
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, one would predict that a. AG is positive for all temperatures. d. AH is - and AS is for the reaction. b. AH is + and AS is for the reaction. e. AH is + and AS' is- for the reaction. c. AH is - and AS is for the reaction. 9. Calculate the standard absolute entropy, in J/mol K. of Mg:...
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