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Classroom Activity 2: The Carbonate System When a carbonate salt, such as sodium carbonate, is placed…
Classroom Activity 2: The Carbonate System When a carbonate salt, such as sodium carbonate, is placed into an acidic solution, carbonic acid (H.CO. weak acid, is formed. 1. Write the chemical formula for the carbonate ion. 2. Draw the Lewis structure for the carbonate ion. 3. How many hydrogen ions can react with the carbonate ion? 4. The chemical formula for carbonic acid is H.CO, How many K values does this acid have?
5. Starting from carbonic acid, write the equilibrium dissociation chemical equations expressions that correspond to those K values. librum dissociation chemical equations and mass action 0. now many equivalence points would you expect on a titration curve of carbonic acid on solution of carbonic From a practical standpoint, it is very difficult to titrate a significantly high concentration solution of Care acid because the acid spontaneously decomposes in aqueous solution to water and carbon dioxide. HSLC can titrate using the carbonate salt, sodium carbonate. 7. Write the balanced equation of sodium carbonate reacting with nitric acid. 8. Write the balanced equation of sodium carbonate reacting with sulfuric acid.
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