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79 solutions

Ka and Kb

Q. Determine the OH-,pH, and pOH of a solution that is 0.125M in co3^2-

Solved • Nov 28, 2019

Ka and Kb

Q. A 0.135M solution of a weak base has a pH of 11.23. Determine Kb for the base.

Solved • Nov 28, 2019

Ka and Kb

Q. Given 0.01 M solutions of each of the following bases, which solution would have the highest pH? A. Hydrazine, (N2H4), Kb = 1.3 x 10^-6 B. Methylamine, (CH3NH2), Kb = 4.4 x 10^-4 C. Dimethylamine, ((CH3)2NH), Kb = 5.1 x 10^-4 D. Aniline (C6H5NH2), Kb = 3.9 x 10^-10

Solved • Nov 20, 2019

Ka and Kb

Q. Which one of the following is the weakest acid?

Solved • Nov 13, 2019

Ka and Kb

Q. Which compound has a very large value of Ka in aqueous solution? a) H3PO4 b) NH3 c) HNO3 d) NaCl e) KOH

Solved • Nov 13, 2019

Ka and Kb

Q. Given that at 25.0 degrees C Ka for HCN is 4.9 x 10^-10 and Kb for NH3 is 1.8 x 10^-5, calculate Kb for CN^- and Ka for NH4^+ Enter the Kb value for CN^- followed by the Ka value for NH4^+, separated by a comma, using two significant figures.

Solved • Nov 8, 2019

Ka and Kb

Q. If Kb for NX3 is 3.5x10^-6, what is the pKa for the following reaction? HNX3^+(aq) + H2O(l) = NX3(aq) + H3O^+(aq) Express your answer numerically to two decimal places.

Solved • Nov 8, 2019