(a) Explanation The given values are: The initial concentration of niacin solution is 0.010 M . The acid dissociation constant of niacin is 1.5 × 10 − 5 . The structural formula of niacin is, Figure 1 The pyridine ring in niacin is replaced by substituent R for the simplification of the structure. Now, the general structure is RCOOH .The dissociation of niacin is given as, RCOOH ( a q ) ⇌ H + ( a q ) + RCOO − ( a q ) The ICE table for the above reaction is, RCOOH ( a q ) ⇌ H + ( a q ) + RCOO − ( a q ) Initial ( M ) 0.010 0.0 0.0 Change ( M ) − x + x + x Equilibrium ( M ) ( 0.010 − x ) x x The change in the concentration ( x ) of niacin is calculated by the formula, K a = [ H + ] [ RCOO − ] [ RCOOH ] Where, [ H + ] is the concentration of H + ions at equilibrium. [ RCOO − ] is the concentration of RCOO − ions at equilibrium. [ RCOOH ] is the concentration of niacin at equilibrium. K a is the dissociation constant of niacin (b) Interpretation Introduction To determine: The percentage ionization of niacin at given concentration.

14th Edition

ISBN: 9780134554570

Author: Brown

Publisher: PEARSON

See similar textbooks

Concept explainers

Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibri…

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.

Videos

Question

Chapter 16.6, Problem 16.13.2PE

(a)

Interpretation Introduction

To determine: The percentage ionization of niacin at given concentration.

(b)

Interpretation Introduction

To determine: The percentage ionization of niacin at given concentration.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 16.6, Problem 16.13.1PE

Chapter 16.6, Problem 16.14.1PE

Students have asked these similar questions

How can Beer’s Law be used to determine the concentration in a selected food sample. Provide an in-depth discussion and examples of this.

b) H3C- H3C Me CH 3 I HN Me H+

Using Luther's rule, determine the reference potentials of the electrodes corresponding to the low stability systems Co³+/Co and Cr²+/Cr from the data in the table. Electrodo ΕΝ Co²+/Co Co3+/Co²+ -0,28 +1,808 Cr³+ / Cr -0,508 Cr3+ / Cr²+ -0,41

Chapter 16 Solutions

EBK CHEMISTRY:CENTRAL SCIENCE

Ch. 16.2 - Practice Exercise 1 Consider the following...Ch. 16.2 - Prob. 16.1.2PE Ch. 16.2 - Prob. 16.2.1PE Ch. 16.2 - Practice Exercise 2 When lithium oxide (Li2O) is...Ch. 16.2 - Based on information in Figure 16.4, place the...Ch. 16.2 - Practice Exercise 2 For each reaction, use Figure...Ch. 16.3 - Practice Exercise 1 In a certain acidic solution...Ch. 16.3 - Practice Exercise 2 Indicate whether solutions...Ch. 16.3 - Prob. 16.5.1PE Ch. 16.3 - Prob. 16.5.2PE

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.