a) Label each species as an Bronsted-Lowry acid or base. Show the conjugate acid-base pairs. HCO; + H;O* H¿CO; + H¿O (aqueous solution) b) Phenol (HC&Hs0) is a weak acid (K,= 1.5 x 104). Write the equilibrium chemical equation, equilibrium constant expression, and calculate the pH of a 0.25 M solution of phenol. 9)

Chemistry: An Atoms First Approach
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Author:Steven S. Zumdahl, Susan A. Zumdahl
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Chapter13: Acids And Bases
Section: Chapter Questions
Problem 174CP
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9)
a) Label each species as an Bronsted-Lowry acid or base. Show the conjugate acid-base pairs.
HCO; + H;O* H¿CO; + H2O (aqueous solution)
b) Phenol (HC&H50) is a weak acid (Ka= 1.5 x 10*). Write the equilibrium chemical equation,
equilibrium constant expression, and calculate the pH of a 0.25 M solution of phenol.
10)
Blood is mainly buffered by HCO; /H2CO; (H2CO3, Carbonic Acid, K= 4.4x10 -") buffer system.
Calculate the pH of human blood for a carbonic acid concentration of 0.091M and HCO;
concentration of 1.00M.
Transcribed Image Text:9) a) Label each species as an Bronsted-Lowry acid or base. Show the conjugate acid-base pairs. HCO; + H;O* H¿CO; + H2O (aqueous solution) b) Phenol (HC&H50) is a weak acid (Ka= 1.5 x 10*). Write the equilibrium chemical equation, equilibrium constant expression, and calculate the pH of a 0.25 M solution of phenol. 10) Blood is mainly buffered by HCO; /H2CO; (H2CO3, Carbonic Acid, K= 4.4x10 -") buffer system. Calculate the pH of human blood for a carbonic acid concentration of 0.091M and HCO; concentration of 1.00M.
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