a)Which of the following statements are false? 1. Dipole-Dipole interactions bet

Question

a)Which of the following statements are false?

1. Dipole-Dipole interactions between molecules are strongest if the molecules possess only induced dipoles.

2. All compounds containing hydrogen atoms can participate in hydrogen bonding.

3. London Dispersion Forces exists between all molecules.

b)Arrange the following compounds in order of DECREASING London Dispersion forces.

GeO2
CO2
SiO2

c)What is the relationship between polarizability and intermolecular forces?
(a)Polarizability effects the strength of London Dispersion Forces

(b)Polarizability is only relevant in molecules that exist in the liquid phase

(c)The polarizability increases as you move to the left of the periodic table

(d)Polarizability effects the strength of Dipole-Dipole interactions

(e)Polarizability effects the molecular weight of the molecule

d)Relate a relatively strong weak acid to its Ka value and to the pH of a 1.0M solution of that weak acid. Use the terms "large" or "small" to fill in the boxes.

A relatively strong weak acid has a_________ Ka Value and a_______ pH.

e)Using the Raoult's Law version that solves for the vapor pressure of the solution, how is the number of moles of solute related to the vapor pressure of the solution?

f)Put the following three compounds in order of lowest to highest Enthalpies of Vaporization.

Methanol (CH3OH)
Ethanol (C2H5OH)
Hexanol (C6H5OH)

Explanation / Answer

a)Which of the following statements are false?

2. All compounds containing hydrogen atoms can participate in hydrogen bonding.

b)Arrange the following compounds in order of DECREASING London Dispersion forces.

GeO2 >SiO2 >CO2

c)What is the relationship between polarizability and intermolecular forces?
(a)Polarizability effects the strength of London Dispersion Forces

d)Relate a relatively strong weak acid to its Ka value and to the pH of a 1.0M solution of that weak acid. Use the terms "large" or "small" to fill in the boxes.

A relatively strong weak acid has a___large______ Ka Value and a___small____ pH.

e)Using the Raoult's Law version that solves for the vapor pressure of the solution, how is the number of moles of solute related to the vapor pressure of the solution?

vapor pressure of the solution containing nonvolatile solute decreases with increase in the number of moles of solute

f)Put the following three compounds in order of lowest to highest Enthalpies of Vaporization.

Hexanol (C6H5OH)   Ethanol (C2H5OH) Methanol (CH3OH)

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