Lecture18-19(2008)

Lecture18-19(2008) - PROPERTIES OF WATER Read: Chapter 2 in...

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PROPERTIES OF WATER Read : Chapter 2 in Environmental Soil Ph ysics Structure of the Water Molecule Water is a simple compound. The individual molecules of water contain one oxygen and two hydrogen atoms. The atoms are not arranged (bonded) linearly (H-O-H) but bent at an angle of about 105 o O / \ H H
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Because of the arrangement of electrons in the O and H the water molecule, the molecule is electrically asymmetrical. The oxygen atom is more electro-negative than the hydrogen atoms; thus it tends to attract the single electrons of the hydrogen atoms, leaving the hydrogen nuclei bare. This results in a partial negative charge on the oxygen atom and each hydrogen atom a partial positive charge. 105 o
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The two hydrogen atoms and the two unbonded electron pairs on the oxygen point toward the corners of a tetrahedron. The two partially positive hydrogen atoms are always on one side of the molecule and the two partially negative electron pairs on the other, resulting in polarit y of the water molecule. 105
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This note was uploaded on 08/08/2008 for the course SS 322 taught by Professor Lowery during the Spring '08 term at Wisconsin.

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Lecture18-19(2008) - PROPERTIES OF WATER Read: Chapter 2 in...

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