Chem - Lecture 6: intermolecular Forces

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7 Terms

1
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What is Van der Waals (aka Dispersion Forces)?

Attraction of negatively charged electron clouds and positively charged nuclei of neighboring molecules.

2
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What are Dipolar Forces?

Attraction between oppositely charged ends of neighboring molecules.

3
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What are Hydrogen Bonds?

Bond between lone pair of electrons on N, O, or F atoms and a H atom.

4
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<p>Which is the donor and which is the acceptor?</p><p>What does X and Y represent in hydrogen bonding?</p>

Which is the donor and which is the acceptor?

What does X and Y represent in hydrogen bonding?

X is donor and Y is acceptor.

Electronegativity of X and electron availability of Y.

5
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What are the solvent properties of water?

Forms Ionic and Covalent compounds & its an environmental and biological solvent.

6
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What are the thermal properties of water?

High heat capacity meaning:

1) Moderation of temp. of earth

2) Moderation of body temp.

3) Development of storms

7
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What are ‘all’ the consequence of hydrogen bonding in water?

1) Solvent abilities

2) Density of water & ice

3) High heat capacity

4) High heat of vaporization

5) Surface tension