a.
Interpretation: To give the color of the solution.
Concept Introduction: The compound consisting of water of hydration (water in a crystal) is called a hydrate. The hydrates are written in a manner that the number of water molecules is written after writing the compound separated by a dot.
a.
Answer to Problem 89A
The color of the solution is pink.
Explanation of Solution
The color of cobalt chloride test paper is blue in color. The cobalt (II) chloride hexahydrate is heated it breaks the water of hydration and results in cobalt (II) chloride.
When cobalt (II) chloride hexahydrate which is pink in color reacts with water, it results in a pink-colored solution.
b.
Interpretation: To give the color of wet cobalt (II) chloride.
Concept Introduction: The compound consisting of water of hydration (water in a crystal) is called a hydrate. The hydrates are written in a manner that the number of water molecules is written after writing the compound separated by a dot.
b.
Answer to Problem 89A
The color of wet cobalt (II) chloride is pink.
Explanation of Solution
The color of cobalt chloride test paper is blue in color. The cobalt (II) chloride hexahydrate is heated it breaks the water of hydration and results in cobalt (II) chloride.
When cobalt (II) chloride hexahydrate which is pink in color reacts with water, it results in a pink-colored solution.
The color of wet cobalt (II) chloride is pink in color.
c.
Interpretation: To give the color of dry cobalt (II) chloride.
Concept Introduction: The compound consisting of water of hydration (water in a crystal) is called a hydrate. The hydrates are written in a manner that the number of water molecules is written after writing the compound separated by a dot.
c.
Answer to Problem 89A
The color of dry cobalt (II) chloride is blue.
Explanation of Solution
The color of cobalt chloride test paper is blue in color. The cobalt (II) chloride hexahydrate is heated it breaks the water of hydration and results in cobalt (II) chloride.
When cobalt (II) chloride hexahydrate which is pink in color reacts with water, it results in a pink-colored solution.
The color of dry cobalt (II) chloride is blue in color.
d.
Interpretation: To calculate the percent by mass of water in the hexahydrate.
Concept Introduction: The percent mass can be calculated as the ratio of the mass of the chemical to the mass of the total compound multiplied by 100.
d.
Answer to Problem 89A
The percent of mass by water is
Explanation of Solution
The mass of 6 moles of water can be calculated as follows:
The molar mass of cobalt (II) chloride is given as follows:
The percent by mass of water in the hexahydrate can be calculated as follows:
e.
Interpretation: To give the use of cobalt (II) chloride test paper.
Concept Introduction: The color of cobalt chloride test paper is blue in color. The cobalt (II) chloride hexahydrate is heated it breaks the water of hydration and results in cobalt (II) chloride.
e.
Answer to Problem 89A
The use of cobalt (II) chloride test paper is best for water or water vapors.
Explanation of Solution
The color of cobalt chloride test paper is blue in color. The cobalt (II) chloride hexahydrate is heated it breaks the water of hydration and results in cobalt (II) chloride.
When cobalt (II) chloride hexahydrate which is pink in color reacts with water, it results in a pink-colored solution.
The use of cobalt (II) chloride test paper is best for water or water vapors.
Chapter 15 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY