Why does benzene have a much higher boiling point (80。c) than hexane (69。c), even though they...
Why does benzene have a much higher boiling point (80。c) than hexane (69。c), even though they have the same number of carbons?
A) Benzene is much more polar than hexane which enhances the attractive forces between molecules and raises the boiling point.
B) Benzene has fewer hydrogens than hexane.
C) Benzene is planar and has delocalized electron density which increases the attractive forces between molecules and raises the boiling point.
D) Benzene can covalently bond to another benzene molecule which increases its boiling point.
E) Hexane has more Kekule structures than benzene.
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Why does benzene have a much higher boiling point
(80。c) than hexane (69。c), even though they...
C The boiling point of H,O is much higher than the boiling point of HS. H2O...
C The boiling point of H,O is much higher than the boiling point of HS. H2O is a molecular compound, while HS is an ionic compound. H2O is a polar molecule, so the attractions between the molecules are stronger than those between nonpolar H2S molecules. H2O has strong hydrogen bonds between its molecules, and HS molecules cannot form hydrogen bonds. The dispersion forces between the H2O molecules are much stronger. d The boiling point of CH,O is much higher than...
The boiling point of iodine (12) is much higher than the boiling point of helium (He)....
The boiling point of iodine (12) is much higher than the boiling point of helium (He). Why? O 12 has a larger electron cloud than He, so more energy is required to overcome the stronger London Dispersion Forces. O It requires more energy to break the covalent bonds in 12 than to overcome the London Dispersion Forces between He atoms. The bonds between iodine atoms are stronger than the bonds between helium atoms and therefore harder to break. O 12...
2. Identify the strongest type of intermolecular forces in acetone, ethanol, water and hexane. (Structures listed...
2. Identify the strongest type of intermolecular forces in acetone, ethanol, water and hexane. (Structures listed on page 15.) Experiment 2 Intermolecular Forces There are three general types of intermolecular forces. All substances exhibit London Dispersion Forces (LDF), and they are generally the weakest of the three types. These London forces are due to the attractions between small, temporary dipoles that arise from the constant, random movement of the electrons in a substance. As molar mass increases, the size of...
Part A H,0 (100°C) has a higher boiling point than CH, OH (65°C). There are more...
Part A H,0 (100°C) has a higher boiling point than CH, OH (65°C). There are more hydrogen bonds between water molecules than between alcohol molecules. There are less hydrogen bonds between water molecules than between alcohol molecules. CH, OH has the higher molecular mass than H,O. There are no hydrogen bonds between alcohol molecules while there are plenty of them between water molecules. O Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining Part B H,O (100°C)...
These two molecules have an identical number of electrons. However, the boiling point of Compound B...
These two molecules have an identical number of electrons. However, the boiling point of Compound B is much higher than that of Compound A How does chemistry rationalizelexplain this difference? CH3CH2CH2-NH2 (A) boiling pt = : 48 °C CH3CH2CH2-OH (B) boiling pt = 98°C Select one: O Compound B exhibits hydrogen-bonding forces, but Compound A does not exhibit hydrogen-bonding forces O Compound B exhibits hydrogen bonding forces but it is hydrophobic, so it does not boil easily. Because O-H is...
why does HCN have a higher boiling point than FCN? ( has to do with intermolecular...
why does HCN have a higher boiling point than FCN? ( has to do with intermolecular forces?)
(b) Why is the magnitude of this value so much larger than the heat of vaporization...
(b) Why is the magnitude of this value so much larger than the heat of vaporization of water (AH°vap = 41 kJ/mol)? * Choose one: A. Less energy is needed to form attractive forces between water molecules than to break H-H and O-O bonds and form H-O bonds. O B. More energy is needed to form attractive forces between water molecules than to break H-Hand O-O bonds and form H-O bonds. o C. Less energy is needed to break attractive...
Why does Isopropanol C3H8O have a higher boiling point at 82.5 degrees than Ethyl Acetate C4H8O2...
Why does Isopropanol C3H8O have a higher boiling point at 82.5 degrees than Ethyl Acetate C4H8O2 (a larger molecule) which has a Boiling point of 77.1 degrees? Please explain with detail. Thank you
3) The temperature of evaporation is much higher for water than for alcohol. Without knowing more...
3) The temperature of evaporation is much higher for water than for alcohol. Without knowing more about the chemistry of alcohol, which of the following is the most logical chemical explanation for this phenomenon A) Fewer hydrogen bonds form between alcohol molecules. As a result, less heat is needed for alcohol molecules to break away from solution and enter the air. B) Alcohol has a higher surface tension than water. This means that alcohol molecules can easily break away from...
QUESTION 18: Choose the correct statement: A. Hexanal has a much lower boiling point than that...
QUESTION 18:
Choose the correct statement:
A.
Hexanal has a much lower boiling point than that of hexanol.
B.
Hexanol is less soluble than 2-hexanone in water.
C.
Hexanal is more soluble than heptane in water.
D.
B and C.
E.
A, B, and C
QUESTION 19:
Ketones are oxidized by Tollens' reagent to carboxylic
acids.
a.) True
b.) False
QUESTION 20:
Question 20 Which of the following reactions can be used to prepare 3-methyl-3-hexanol? OH CH3CH2CCH2CH2CH3 ? CH 3...
C The boiling point of H,O is much higher than the boiling point of HS. H2O is a molecular compound, while HS is an ionic compound. H2O is a polar molecule, so the attractions between the molecules are stronger than those between nonpolar H2S molecules. H2O has strong hydrogen bonds between its molecules, and HS molecules cannot form hydrogen bonds. The dispersion forces between the H2O molecules are much stronger. d The boiling point of CH,O is much higher than...
The boiling point of iodine (12) is much higher than the boiling point of helium (He). Why? O 12 has a larger electron cloud than He, so more energy is required to overcome the stronger London Dispersion Forces. O It requires more energy to break the covalent bonds in 12 than to overcome the London Dispersion Forces between He atoms. The bonds between iodine atoms are stronger than the bonds between helium atoms and therefore harder to break. O 12...
2. Identify the strongest type of intermolecular forces in acetone, ethanol, water and hexane. (Structures listed on page 15.) Experiment 2 Intermolecular Forces There are three general types of intermolecular forces. All substances exhibit London Dispersion Forces (LDF), and they are generally the weakest of the three types. These London forces are due to the attractions between small, temporary dipoles that arise from the constant, random movement of the electrons in a substance. As molar mass increases, the size of...
Part A H,0 (100°C) has a higher boiling point than CH, OH (65°C). There are more hydrogen bonds between water molecules than between alcohol molecules. There are less hydrogen bonds between water molecules than between alcohol molecules. CH, OH has the higher molecular mass than H,O. There are no hydrogen bonds between alcohol molecules while there are plenty of them between water molecules. O Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining Part B H,O (100°C)...
These two molecules have an identical number of electrons. However, the boiling point of Compound B is much higher than that of Compound A How does chemistry rationalizelexplain this difference? CH3CH2CH2-NH2 (A) boiling pt = : 48 °C CH3CH2CH2-OH (B) boiling pt = 98°C Select one: O Compound B exhibits hydrogen-bonding forces, but Compound A does not exhibit hydrogen-bonding forces O Compound B exhibits hydrogen bonding forces but it is hydrophobic, so it does not boil easily. Because O-H is...
(b) Why is the magnitude of this value so much larger than the heat of vaporization of water (AH°vap = 41 kJ/mol)? * Choose one: A. Less energy is needed to form attractive forces between water molecules than to break H-H and O-O bonds and form H-O bonds. O B. More energy is needed to form attractive forces between water molecules than to break H-Hand O-O bonds and form H-O bonds. o C. Less energy is needed to break attractive...
3) The temperature of evaporation is much higher for water than for alcohol. Without knowing more about the chemistry of alcohol, which of the following is the most logical chemical explanation for this phenomenon A) Fewer hydrogen bonds form between alcohol molecules. As a result, less heat is needed for alcohol molecules to break away from solution and enter the air. B) Alcohol has a higher surface tension than water. This means that alcohol molecules can easily break away from...
QUESTION 18:
Choose the correct statement:
A.
Hexanal has a much lower boiling point than that of hexanol.
B.
Hexanol is less soluble than 2-hexanone in water.
C.
Hexanal is more soluble than heptane in water.
D.
B and C.
E.
A, B, and C
QUESTION 19:
Ketones are oxidized by Tollens' reagent to carboxylic
acids.
a.) True
b.) False
QUESTION 20:
Question 20 Which of the following reactions can be used to prepare 3-methyl-3-hexanol? OH CH3CH2CCH2CH2CH3 ? CH 3...
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