Homework Assignment #1 Intermolecular Forces and Liquids and Solids Due date: Fe
ID: 1084312 • Letter: H
Question
Homework Assignment #1 Intermolecular Forces and Liquids and Solids Due date: February 14th, 2018) 1) List the types of intermolecular forces that exist between molecules (or basic units) in each of the following species: a) Sodium chloride (NaCI) b) Chloroform (CH:CI) c) Methane (CH.) 2) Arrange the following substances in order of increasing boiling point: CHsOH, He, CH,CI, and NaCI Explain your reasoning 3) The phase diagram of sulfur is shown below. Monoclinic and rhombic are two allotropes of sulfur 154°C 1288 atm Liquid Monoclinic Rhombic 1.0 10-4 alm Vapor 10-3 atm 95.4 C119 C rc) Using the given phase diagram of sulfur, answer the following questions. a) How many triple points are in the diagram? b) Is any critical point shown in the diagram? c) Under atmospheric conditions, which allotrope, the monoclinic or the rhombic, is more stable? 4) The distance between layers in a sodium chloride (NaCl) crystal is 282 pm. X ray are diffracted that n=1, calculate the wavelength of the X rays in nm (nanometers) from these layers at an angle of 30.0°. Assuming 5) Palladium metal has a density of 12.02 g/em and unit cell edge length of 388.9 pm. The Palladium atoms occupy only the lattice points,(a) In hat cubic unit cell, des palladium crystallize? (b) what is the atomic radius of palladium? (Show your calculations step by step) 17.6°C what is its pressure at 60.6°C? 6) The vapor pressure of propane, CHs, is 40.1 mmHg The molar heat of vaporization of propane is 15.7 kJ/mol.Explanation / Answer
Ans 1 :
Intemolecular forces are the attractive or repulsive forces that are present between the molecules of a particular compound.
So the intermolecular forces present here are :
a) NaCl : Ion- Dipole forces
b) Chloroform : Dipole dipole interactions
c) Methane : London dispersion forces
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.