Homework Answers
13)
A) The only type of intermolecular forces in CH4 and CCl4 are London dispersion forces because both are non polar molecules.
CCl4 would be expected to have a stronger inter molecular force (london dispersion force) than CH4 since it possesses more electrons (or higher molecular mass) than CH4.
Thus the magnitude of the dispersion forces present between CCl4 molecules is greater than that between CH4 molecules.
B) Due to higher inter molecular force of attraction between CCl4 molecules it's boiling point will also be higher than CH4 molecules.
Therefore CH4 boils at 111K while CCl4 boils at 350K.
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A 13. (a) Which would have the stronger intermolecular force, CHA or Cla? Briefly explain your...
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...
What type(s) of intermolecular forces are expected between SO2Cl2 molecules? ball & stick V - labels...
What type(s) of intermolecular forces are expected between SO2Cl2 molecules? ball & stick V - labels Indicate with a Y (yes) or an N (no) which apply. dipole forces induced dipole forces hydrogen bonding What type(s) of intermolecular forces are expected between PC13 molecules? Choose all that apply dispersion hydrogen bonding dipole-dipole ion-ion What type(s) of intermolecular forces are expected between H20 molecules? ball & stick v + labels Indicate with a Y (yes) or an N (no) which apply....
INTERMOLECULAR FORCES INTRODUCTION LEARNING OBJECTIVES To relate the effecet of intermolecular fo...
INTERMOLECULAR FORCES INTRODUCTION LEARNING OBJECTIVES To relate the effecet of intermolecular forces on relative melting points and vapour pressures of some organic substances THEORY Weak attractive forces that occur between individual molecules in substances are called intermolecular forces. These include London dispersion forces, dipole-dipole forces and hydrogen-bonding forces. Collectively, the three types of intermolecular forces are referred to as Van der Waals forces. These attractive forces are much weaker than the chemical bonds between atoms in a molecule. Note that...
Please help with 25-27 ASAP!! 25. (2 pts) Which intermolecular force causes the higher boiling point...
Please help with 25-27 ASAP!!
25. (2 pts) Which intermolecular force causes the higher boiling point in the previous question (select one)? (a) hydrogen bonding. (b) dipole-dipole, () London dispersion, (d) ion-dipole 26. (2 pts) What kind(s) of intermolecular force exist in CC14)? (select one answer) (a) hydrogen bonding, (b) dipole-dipole, (c) London dispersion, (d) all: (a)+(b)+(c) 27. (4 pts) Give approximate values for the indicated bond angles in the following molecule H-C-C-O l: H-C-O 2: H-C-H
Need help. Tnks which of the following boils at the highest temperature? A CH. B. C₂H6...
Need help. Tnks
which of the following boils at the highest temperature? A CH. B. C₂H6 с. Сан, D. CH10 24. Which probably has the lowest boiling point at 1.00 atm? A. HEB . HCI C. HBr D. HI E. C5H12 E. H2SO4 or the following substances has London dispersion force as its only intermolecular force? (NO hydrogen bonding, no dipole-dipole forces.) A. CH,OH S.NH, C.HS D. CHA 26. Which statement is true for the following structures: CH3CH2OH CH.CHOCHCHA NaF...
Chemistry 2 help with lab questions! Intermolecular forces are not chemical bonds. Explain the difference. When...
Chemistry 2 help with lab questions! Intermolecular forces are not chemical bonds. Explain the difference. When answering the rest of the essay questions, use language that clearly distinguishes between chemical bonds and intermolecular forces. Why do compounds with higher intermolecular forces have higher boiling points? Show that you understand why a higher temperature is needed to boil a compound that has stronger intermolecular forces. Which has greater dispersion forces, hexane or pentane? How can you use their molecular formulas to...
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...
My answers: Not sure if they are correct. 1. a. London dispersion b. H-bonding, dipole-dipole,...
My answers: Not sure if they are correct.
1. a. London dispersion
b. H-bonding, dipole-dipole, london dispersion
c. London dispersion
d. Ionic, london disperson
2. The second one because not a lot of H+ and less acidic. Need
help understanding the meaning of the question.
3. Diethyl cannot h-bond because it does not provide intermolecular
bonding engery while 1-b. can form h-bond making strong
intermolecular bonds to take up greater engery to break
molecules.
4. Not sure...
18) What is the strongest intermolecular force is the strongest intermolecular force in a liquid containing...
18) What is the strongest intermolecular force is the strongest intermolecular force in a liquid containing molecules with H-O bonds? A) covalent bonds B) dipole forces C) dispersion forces D) hydrogen bonds E) none of the above Section: 11.2 The Intermolecular Bond Concept 19) Consider the following liquids with similar molar masses. Predict which has the strongest intermolecular attraction based only on boiling point data. A) butyl alcohol (Bp @ 760 mm Hg = 117 °C) B) ethyl ether (Bp...
Which of the following are TRUE statements regarding evaporation, boiling, and vapor pressure? Select as many...
Which of the following are TRUE statements regarding evaporation, boiling, and vapor pressure? Select as many as are applicable however points will be deducted for incorrect answers. Select one or more: The standard boiling point occurs when the vapor pressure of a compound equals 1 bar The rate of evaporation at temperatures below the boiling point is dependent on surface area The vapor pressure at dynamic equilibrium in a closer container does not depend on the amount of liquid, as...
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...
What type(s) of intermolecular forces are expected between SO2Cl2 molecules? ball & stick V - labels Indicate with a Y (yes) or an N (no) which apply. dipole forces induced dipole forces hydrogen bonding What type(s) of intermolecular forces are expected between PC13 molecules? Choose all that apply dispersion hydrogen bonding dipole-dipole ion-ion What type(s) of intermolecular forces are expected between H20 molecules? ball & stick v + labels Indicate with a Y (yes) or an N (no) which apply....
INTERMOLECULAR FORCES INTRODUCTION LEARNING OBJECTIVES To relate the effecet of intermolecular forces on relative melting points and vapour pressures of some organic substances THEORY Weak attractive forces that occur between individual molecules in substances are called intermolecular forces. These include London dispersion forces, dipole-dipole forces and hydrogen-bonding forces. Collectively, the three types of intermolecular forces are referred to as Van der Waals forces. These attractive forces are much weaker than the chemical bonds between atoms in a molecule. Note that...
Please help with 25-27 ASAP!!
25. (2 pts) Which intermolecular force causes the higher boiling point in the previous question (select one)? (a) hydrogen bonding. (b) dipole-dipole, () London dispersion, (d) ion-dipole 26. (2 pts) What kind(s) of intermolecular force exist in CC14)? (select one answer) (a) hydrogen bonding, (b) dipole-dipole, (c) London dispersion, (d) all: (a)+(b)+(c) 27. (4 pts) Give approximate values for the indicated bond angles in the following molecule H-C-C-O l: H-C-O 2: H-C-H
Need help. Tnks
which of the following boils at the highest temperature? A CH. B. C₂H6 с. Сан, D. CH10 24. Which probably has the lowest boiling point at 1.00 atm? A. HEB . HCI C. HBr D. HI E. C5H12 E. H2SO4 or the following substances has London dispersion force as its only intermolecular force? (NO hydrogen bonding, no dipole-dipole forces.) A. CH,OH S.NH, C.HS D. CHA 26. Which statement is true for the following structures: CH3CH2OH CH.CHOCHCHA NaF...
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...
My answers: Not sure if they are correct.
1. a. London dispersion
b. H-bonding, dipole-dipole, london dispersion
c. London dispersion
d. Ionic, london disperson
2. The second one because not a lot of H+ and less acidic. Need
help understanding the meaning of the question.
3. Diethyl cannot h-bond because it does not provide intermolecular
bonding engery while 1-b. can form h-bond making strong
intermolecular bonds to take up greater engery to break
molecules.
4. Not sure...
18) What is the strongest intermolecular force is the strongest intermolecular force in a liquid containing molecules with H-O bonds? A) covalent bonds B) dipole forces C) dispersion forces D) hydrogen bonds E) none of the above Section: 11.2 The Intermolecular Bond Concept 19) Consider the following liquids with similar molar masses. Predict which has the strongest intermolecular attraction based only on boiling point data. A) butyl alcohol (Bp @ 760 mm Hg = 117 °C) B) ethyl ether (Bp...
Which of the following are TRUE statements regarding evaporation, boiling, and vapor pressure? Select as many as are applicable however points will be deducted for incorrect answers. Select one or more: The standard boiling point occurs when the vapor pressure of a compound equals 1 bar The rate of evaporation at temperatures below the boiling point is dependent on surface area The vapor pressure at dynamic equilibrium in a closer container does not depend on the amount of liquid, as...
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