1. The ionization constant (Kb) of aniline (C6H5NH2) is 2.35 x 10^-5. If 7.285 grams of aniline is dissolved in 100.0 mL of water, what are the equilibrium concentration of all species present? 2. A certain acidic vitamin is essential for all mammals since it plays a role in DNA repair and cell signaling. A 0.439M solution of this acid is found to have a pH of 2.607. Based on the table below, what most likely is the identity of this unknown acid?

Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter8: Acids And Bases
Section: Chapter Questions
Problem 8.30P
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1. The ionization constant (Kb) of aniline (C6H5NH2) is 2.35 x 10^-5. If 7.285 grams of aniline is dissolved in 100.0 mL of water, what are the equilibrium concentration of all species present?
2. A certain acidic vitamin is essential for all mammals since it plays a role in DNA repair and cell signaling. A 0.439M solution of this acid is found to have a pH of 2.607. Based on the table below, what most likely is the identity of this
unknown acid?

 

Possible Identity of the Unknown Acid
Kaivi
ascorbic acid
citric acid ted with
7.4x10-4
=
modu ma lactic acidem 7.9x10-5
8.4×10-4
nicotinic acid
1.4x10-5
Transcribed Image Text:Possible Identity of the Unknown Acid Kaivi ascorbic acid citric acid ted with 7.4x10-4 = modu ma lactic acidem 7.9x10-5 8.4×10-4 nicotinic acid 1.4x10-5
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