CALCIUM CARBONATE - (471-34-1)

Introduction

Name: calcium carbonate
* IUPAC
CAS Number: 471-34-1
Chemical Formula: CaCO3
Molar Mass: 100.0869 g
Mass Percent: Ca 40.043 %; C 12.000 %; O 47.956 % 

Classification

• inorganic

Uses/Function

• "Limestone, which consists mostly of calcium carbonate, has been used in agriculture for centuries. It is spread on fields to neutralize acidic compounds in the soil and to supply the essential nutrient Ca2+." 1

• "Used as a building material, to make lime, and, in high purity, as a toothpaste abrasive and antacid." 2

• "seashells...are composed chiefly of calcium carbonate" 3

• "Corrosion control [in chemical water analysis]" 4

Solubility

Ksp:3.36·10-9 5

Bonding

Thermochemistry

ΔHf° (s): -288.51 kcal/mol 6 = -1,207.13 kJ/mol
ΔHf° (s): -288.46 kcal/mol 6 = -1,206.92 kJ/mol
S° (s): 21.2 cal/(mol•K) 7 = 88.70 J/(mol•K)
S° (s): 22.2 cal/(mol•K) 7 = 92.88 J/(mol•K)
ΔGf° (s): -269.55 kcal/mol 8 = -1,127.80 kJ/mol
ΔGf° (s): -269.80 kcal/mol 8 = -1,128.84 kJ/mol

Reactions

For More Information

Wikipedia
Magazines:
Choi, Charles Q. A Calcium Conundrum Explained. Scientific American, April 2009, p 31.

Sources

(1) - Kotz, Treichel, and Weaver. Chemistry & Chemical Reactivity, 6th ed.; Thomson Brooks/Cole: Belmont, CA, 2006; p 1030.
(2) - Silberberg, Martin S. Chemistry: The Molecular Nature of Matter and Change, 4th ed.; McGraw-Hill: New York, 2006; p 565.
(3) - Brady, James E. and Senese, Fred. Chemistry: Matter and Changes, 4th ed.; John Wiley and Sons: Hoboken, New Jersey, 2004; p 1012.
(4) - Hammer, Mark J. Water and Wastewater Technology, 2nd ed.; Prentice Hall: Englewood Cliffs, NJ, 1986; p 9.
(5) - Lide, David R. CRC Handbook of Chemistry and Physics, 84th ed.; CRC Press: Boca Raton, FL, 2002; p 8:119-8:122.
(6) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(7) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(8) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(9) - Swaddle, T.W. Inorganic Chemistry; Academic Press: San Diego, 1997; p 269.
(10) - Ebbing, Darrell D. General Chemistry 3rd ed.; Houghton Mifflin Company: Boston, MA, 1990; p 85.
(11) - Ebbing, Darrell D. General Chemistry 3rd ed.; Houghton Mifflin Company: Boston, MA, 1990; p 181.
(12) - Ebbing, Darrell D. General Chemistry 3rd ed.; Houghton Mifflin Company: Boston, MA, 1990; p 84.
(13) - Ebbing, Darrell D. General Chemistry 3rd ed.; Houghton Mifflin Company: Boston, MA, 1990; pp 94, 181.
(14) - Kotz, John C., Treichel, Paul, and Weaver, Gabriela. Chemistry & Chemical Reactivity 6th ed.; Thomson Brooks/Cole: Belmont, CA, 2006; p 166.