NITROGEN MONOXIDE - (10102-43-9)

Introduction

Name: nitrogen monoxide; nitric oxide
* IUPAC
CAS Number: 10102-43-9
Chemical Formula: NO
Molar Mass: 30.0061 g
Mass Percent: N 46.679 %; O 53.320 % 

Classification

• inorganic

Uses/Function

• "At the high temperatures produced by the lightning in a thunderstorm or in a forest fire, some NO forms and is liberated into the much cooler surrounding atmosphere." 1

• "In recent years, researchers have learned that very low concentrations of NO have important roles in a variety of physiological processes, not only in humans, but in such a variety of animals as barnacles, chickens, trout, and fruit flies. It has recently been found to be involved in transmission of signals by nerves, blood clotting, local control of blood flow, the immune system's ability to kill tumor cells and bacteria, and possibly even memory." 2

Bonding

Bonding: polar covalent
Ionic Character: 12.12 %

Thermochemistry

ΔHf° (g): 21.57 kcal/mol 3 = 90.25 kJ/mol
S° (g): 50.347 cal/(mol•K) 4 = 210.65 J/(mol•K)
ΔGf° (g): 20.69 kcal/mol 5 = 86.57 kJ/mol

Reactions

For More Information

Sources

(1) - Gillespie, Ronald J., Eaton, Donald R., Humphreys, David A., and Robinson, Edward A. Atoms, Molecules, and Reactions; Prentice-Hall: Englewood Cliffs, NJ, 1994; p 585.
(2) - Whitten, Kenneth W., Davis, Raymond E., and Peck, M. Larry. General Chemistry 6th ed.; Saunders College Publishing: Orlando, FL, 2000; p 961.
(3) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(4) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(5) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(6) - T > -2078.6666148646
(7) - T > -35844.9848024312
(8) - T > -3199.39194324803
(9) - T > 7287.0407751312
(10) - T > -5019.01224987529
(11) - T < 779.485078194359
(12) - T < 482.758620689655
(13) - T < 1972.55991663772
(14) - T < 1465.24647375309