Intermolecular forces. In our experiment we want to find out how intermolecular forces are present in our samples, how they interact with each other. We will experiment the relationships between molecular structures and their physical properties: volatili

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Name: Vladimir Koloskov

Section: Chem 111/102

Date submitted: 09/15/2011

Team member: Jake Harding

Experiment #16: Intermolecular Forces-The Relationship Between Physical Properties and Structure

Introduction

The forces holding molecules together are generally called intermolecular forces. The energy required to break molecules apart is much smaller than a typical bond-energy, but intermolecular forces play important roles in determining the properties of a substances. In our experiment we want to find out how intermolecular forces are present in our samples, how they interact with each other. We will experiment the relationships between molecular structures and their physical properties: volatility, viscosity and solubility.

Data

Part A: Relative Volatilities of Samples.

A.

Volatility

n-decane

n-heptane

n-pentane

third

second

first

B.

Volatility

n-butanol

ethanol

methanol

third

second

first

C.

Volatility

n-butanol

Deionized water

n-pentane

second

third

first

B. Relative Viscosities of Materials.

VISCOSITY

N- Hexane

Deionized water

Glycerol

Middle

Lowest

Highest

C. Mutual Slubilities of Liquids

water