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Which of the following are affected by intermolecular forces? A. the taste sensations. B. the existence...
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 best describes London dispersion forces. Question 1 options: the intermolecular forces that exist when ions from an ionic compound are attracted to the dipole of polar molecules in a mixture. involves molecular orientations in which the positive end of one dipole is near the negative end of another forces that exist only between molecules that contain hydrogen atoms bonded to highly electronegative atoms such as O, N, F. Interactions between temporary dipoles cause atoms to be...
We discussed the different types of intermolecular forces in this lesson, one of which was the hydrogen bond. Which of the molecules below would have this type of intermolecular force? A. HCl B. all of the above C. H2 D. CH4 E. CH3CH2OH
Which of the following indicates the existence of strong intermolecular forces of attraction in a liquid? a very low vapor pressure a very low viscosity a very low enthalpy of vaporization Which of the following compound has the lowest normal boiling point? Which of the following pure substances has an unstably high normal baling point? CH_3OH_3 HC1 CH_3NH_2 CH_3SH CH_3CI Which of the following substance has the weakest intermolecular forces? I_2 CaO C_3H_15 SbCl_3 SiH_4 You are given the following...
What intermolecular forces must be overcome to convert the following liquids to a gas? Include ALL forces. What intermolecular forces must be overcome to convert the following liquids to a gas? Include ALL ho: 2. Rank the molecules in question I by increasing boiling point. O Type here to search
Which of the following molecules is nonpolar? a. H2 b. HF c. HCl d. HI e. HBr Which of the following molecules can participate in Hydrogen bonding? a. HF b. CO2 c. CH4 d. H2S Which of the following molecules is polar? a. H2O b. CO2 c. CH4 d. N2 e. None of the above In lab, temperature changes caused by ________________ of liquids will be related to the strength of intermolecular forces. a. Evaporation b. Mass c. Density d....
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...
UP Determine what type of intermolecular forces are in the following molecules. a) N2 b) HCN c) CCL d) MgBr2 e) CH CI Dispersion forces only because nonpolar molecules) f) CH3CO2H 5. Which of the following substances would you expect to have a nonzero dipole moment? Explain, and show the direction of each. a) NF3 b) CH3NH2 c) XeF2 d) PCI e) XeFg f) BF;
9. Which intermolecular forces are found in CO2? A) dispersion forces and dipole-dipole forces B) hydrogen bonding C) dipole-dipole forces D) dispersion forces E) none of the above
h of the following statements is NOT true? London dispersion forces are present in all substances but are the only significant intermolecular forces in nonpolar substances. ) The density of the liquid state of a substance is greater than the density of its gaseous state. The thermal energy in a liquid allows the atoms within molecules to completely overcome the attractions between them so they flow. Most liquids can be converted to a gas by reducing pressure and/or heating. The...