6A. The carbon dioxide of the atmosphere, being a nonmetallicoxide and acid anhy

Question

6A. The carbon dioxide of the atmosphere, being a nonmetallicoxide and acid anhydride, has a low solubility in rainwater butproduces a slightly acidic solution. Write an equilibrium equationfor the dissolution of carbon dioxide in water and identify theacid that it formed. 6B. Calcium carbonate, the major component of limestone, isslightly soluble in water. Write an equilibrium equation showingthe slight solubility of calcium carbonate in water. 6C. Write a Bronsted equation for the weak acid formed in partA, showing how it produce hydronium ion in aqueous solution. 6A. The carbon dioxide of the atmosphere, being a nonmetallicoxide and acid anhydride, has a low solubility in rainwater butproduces a slightly acidic solution. Write an equilibrium equationfor the dissolution of carbon dioxide in water and identify theacid that it formed. 6B. Calcium carbonate, the major component of limestone, isslightly soluble in water. Write an equilibrium equation showingthe slight solubility of calcium carbonate in water. 6C. Write a Bronsted equation for the weak acid formed in partA, showing how it produce hydronium ion in aqueous solution.

Explanation / Answer

6A. CO2 (g)+ H2O (l) <---> H2CO3 (aq)                                           carbonic acid 6B. CaCO3(s) + H2O(l) <---->CO2(g) + Ca(OH)2(aq) 6C. The removal of a proton (hydrogen ion) from an acid producesits conjugate base, which is the acid with a hydrogen ion removed,and the reception of a proton by a base produces its conjugateacid, which is the base with a hydrogen ion added.
Bronsted Equation is : H2CO3 ----> H+ + HCO3-                                   acid                   conjugate base

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