please help me answer these. thank you 1) List the types of intermolecular force

Question

please help me answer these. thank you

1) List the types of intermolecular forces that ex ist between molecules (or basic units) in cach of the l b) Chloroform (CH,Cl) a) Sodium chloride (NaC1) followiing species c) Methane (CH4) 2) Arrange the following substances in order of increasing boiling point: CH O1I, He. CH,Cl, and NaC1 3) The phase diagram of sulfur is shown below. Monoclinic and rhombic are two allotropes of sulfur Explain your reasoning 154°C 1288 atm Rhombic Liquid Monoclinic 1.0 105 atm Vapor 95.4°C 119°C t eC) 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 shownm 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 (NaCI) crystal is 282 pm. X ray are diffracted from these layers at an angle of 30.0°. Assuming that n-1, calculate the wavelength of the X rays in nm (nanometers). 5) Palladium metal has a density of 12.02 g/cm* and unit cell edge length of 388.9 pm. The Palladium atoms occupy only the lattice points,(fa n what cubic unit cell, does palladium crystallize? (b) What is the atomic radius of palladium? (Show your calculations step by step) 7.6°C. What is its pressure at 60.6 °C? 6) The vapor pressure of propane, C3Hs, is 40.1 mmHgat The molar heat of vaporization of propane is 15.7 kJ/mol.

Explanation / Answer

Ans 1 :

Intermolecular forces can be attractive or repulsive forces that exist between the molecules of a compound.

So here :

a) NaCl : Ion dipole forces

b) Chloroform : Dipole - dipole interactions

c) Methane : London dispersion interactions

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