CHEM151Take-home Q8 Key

Chemistry (MasteringChemistry Series)

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Name Take‐Home Quiz #8 (DUE Friday October 24th, 2008) Date Score 1) Identify the intermolecular force in each of the following. (3 points) a. CH3F Polar Compound: IMF = Dipole‐dipole b. C6H14 Nonpolar Compound: IMF = London Dispersion Forces c. MgCl2 Ionic Compound: IMF = Ion‐ion d. CH2O Polar Compound: IMF = Dipole‐dipole e. HF H bonded to F: IMF = H‐bonding f. NaCl in H2O Ionic compound in a polar one: IMF = Ion‐dipole 2) Which member of each pair has a higher boiling point (i.e. stronger intermolecular force)? (2 points) a. CH3OH or CH2O ‐ Has H‐bonding which is stronger than Dipole‐dipole b. HI or HBr ‐ Iodine is bigger c. CH4 or CH3F ‐ Polar versus nonpolar d. CO2 or F2 ‐ Both nonpolar; Carbon dioxide is larger 3) Briefly define the following: ( 5 points) a. Viscosity – resistance to pour b. Surface Tension – Attraction of molecules on surface c. Sublimation – Phase change from solid to gas d. Deposition – Phase change from gas to solid e. Vaporization – Phase change from liquid to gas f. Condensation – Phase change from gas to liquid g. Triple Point – All three phase boundaries meet on phase diagram. All three phases are at equilibrium h. Critical Point – The liquid – gas boundary ends on a phase diagram i. j. Normal Boiling Point – Boiling point at a pressure of 1 atm Normal Melting Point – Melting point at a pressure of 1 atm ...
View Full Document

This document was uploaded on 09/27/2011.

Ask a homework question - tutors are online