Question

rank the molecules in the table from weakest to strongest intermolecular forces and briefly justify the ranking.

temperature 310 20 time (s) 40 Fig. 10.1. Sample data for an evaporative cooling process. Before You Come to Lab Based on what you know about the relationship between the structure of a molecule and the strength of its intermolecular forces, rank the molecules in the table below in order from the weakest to the strongest intermolecular forces and briefly justify your ranking Molecules and their Chemical Formulas You will encounter two types of organic compounds in this experiment: alkanes, which contain only a series of carbons connected by single bonds with hydrogens attached to fulfill the octet, and alcohols, which have a hydroxide (-OH) group at the end. We will also be studying water. The two formulas given for each molecule below are equivalent. The first is shorter (and therefore easier to use when calculating molar masses), while the second shows how the atoms are connected. Name Short Formula Connection Formula Water HO Methanol CH3OH Ethanol C,H,OH CH2CH OH 1-pentanol C5H10H CH,CH.CH. CHCH OH n-pentane C5H12 CH2CH.CH CH CH3 n-hexane C6H14 CH2CH.CH CH CH CH3 10.2 Procedure CL

Answer 1

Intermolecular 1orces seits n-nexane npentane 1-pentanol Ethonol 7 methanol H20 (water)