AP MCQ 03ABCIJ PART 1 Question 01: In which of the following are the intermolecular forces listed (from left to right), weakest to strongest? Dipole-Dipole < Hydrogen Bonding < London Dipersion Forces London Dipersion Forces < Dipole-Dipole < Hydrogen Bonding Hydrogen Bonding < Dipole-Dipole < London Dipersion Forces Hydrogen Bonding < London Dipersion Forces < Dipole-Dipole Question 02: Which of the following compounds will exhibit hydrogen bonding between its molecules? H2 CH3CH3 C2H6 CH3NH2 Question 03: Which of the following compounds would you expect to evaporate most quickly, from identical containers at identical temperatures? H2O CCl4 C2H6 C5H12 Question 04: If a molecular solid is found to be soft, have a low melting and boiling point, and can sublime at room temperature, what type of intermolecular attractions are most likely to be present in the solid? London dispersion forces Dipole-dipole forces Hydrogen bonding Covalent bonds Question 05: Iodine is a molecular solid. What type of intra bonding is present in an I2 molecule? London dispersion forces Dipole-dipole forces Hydrogen bonding Covalent bonds Question 06: At room temperature and pressure, bromine is a liquid that consists of diatomic molecules. Which statement is consistent with these observations? The bromine atoms within a diatomic bromine molecule are held together with weak, London dispersion forces Breaking covalent bonds requires very little energy Diatomic bromine molecules are attraced to one another with weak, London dispersion forces Covalent bonds are weaker than ionic bonds Question 07: A large Rf value for a given component of a mixture is indicative of which of the following? The distillation of a mixture of liquids with widely differing boiling points A component that travels a very short distance on a chromatogram A strong intermolecular attraction between the component and the moving phase in a chromatography experiment A weak intermolecular attraction between the component and the moving phase in a chromatography experiment Question 08: The diagram below shows two, complex organic molecules that biologists call a 'base pair' - in this case the 'GC' pair. What do the dotted lines represent? DNA bonds Amino acid bonds Hydrogen bonds Covalent bonds Question 09: A student finds that the boiling points of two isomers with the same empirical formula, C2H6O, are extremely different. What is the most likely explanation for the large difference? Different structures lead to different types of IMF's Different structures lead to different covalent bonds being formed Different structures lead to one being ionic and one being covalent The data must have been recorded incorrectly Question 10: When melting a substance, it is observed that less energy is required than when vaporizing the same amount of the same substance. Which statement best accounts for this observation? When melting, the substance is already at a higher temperature When vaporizing, any intermolecular forces need to be completely broken When vaporizing, the substance is already at a higher temperature When vaporizing, a large temperature change is required Δ