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236 solutions

Weak Acids

Q. HF has a Ka= 6.8*10^-4. Find the pH of a .15 solution of HF and its % ionization.

Solved • Mar 25, 2020

Weak Acids

Q. What is the pH of 0.15 M benzoic acid in pure water?

Solved • Mar 24, 2020

Weak Acids

Q. Codeine (C18H21NO3) is a narcotic pain reliever titrated with HCL. What is the pH of a 0.0500 M codeine hydrochloride solution with a pKb of 5.80? Note the titrated form of codeine hydrochloride will act as a weak acid due to the formation of soluble ammonium salt.

Solved • Mar 24, 2020

Weak Acids

Q. H2SO4 is a strong acid because the first proton ionizes 100%. The Ka of the second proton is 1.1x10^-2. What would be the pH of a solution that is 0.100 M H2SO4? Account for the ionization of both protons. a) 2.05 b) 0.963 c) 0.955 d) 1.00

Solved • Mar 12, 2020

Weak Acids

Q. Aspartic acid is a polypeptide side chain found in proteins. The pKa of aspartic acid is 3.86. If this polypeptide were in an aqueous solution with a pH of 7, the side chain would have what charge? a) negative b) positive c) neutral d) there is no way to know

Solved • Mar 12, 2020

Weak Acids

Q. In the laboratory, a general chemistry student measured the pH of a 0.574 M aqueous solution of hypochlorous acid to be 3.834. Use the information she obtained to determine the Ka for this acid. Ka(experiment) = ___________

Solved • Mar 16, 2020

Weak Acids

Q. In the laboratory, a general chemistry student measured the pH of a 0.360 M aqueous solution of benzoic acid, C6H5COOH to be 2.338. Use the information she obtained to determine the Ka for this acid. Ka(experiment) = __________

Solved • Mar 16, 2020