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Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

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Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 3, Problem 77GQ
Textbook Problem
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Identify, from each list below, the compound or compounds that will dissolve in water to give a solution that is only a very weak conductor of electricity.

(a) NH3, NaOH, Ba(OH)2, Fe(OH)3

(b) CH3CO2H, Na3PO4, HF, HNO3

(a)

Interpretation Introduction

Interpretation:

The compound (s) that conduct only very weak electricity when dissolved in water should be identified.

Concept introduction:

Acids can donate the H+ ion, base can accept the H+ ion or donate the OH- ion,

strong acids or strong bases are ionize in water very easily, weak acid or weak bases are ionize very slowly.

strong acid and sarong base are one that completely ionizes (dissociates) in a solution (provided there is sufficient solvent).  In water, acid HA dissolves and gives H+ (as hydronium ion H3O+ ion).  Bases dissolve and gives OH- ion.

Conductor of electricity depends on the movements of the ions in solution, ions gets separated, it behaves as strong conductor of electricity.  If the ions not completely dissociate that will be a very weak conductor of electricity

Strong electricity conductors are strong acids and weak bases.

Weak electricity conductors are weak acid and weak bases.

Soluble compounds in water

Almost all the salts of Na+, K+, NH4+,(NO3-),(ClO3-),(ClO4-)and(CH3CO2-) are soluble.

Almost all the salts of Cl-, Br-, I-(halides) are soluble.  But some of the halides are (Ag+, Hg22+, Pb2+) are insoluble.

Salts of F- are soluble.  But some of the fluoride salt of Mg2+, Ca2+, Sr2+, Ba2+, Pb2+ are insoluble.

Salts of sulfate (SO42-) are soluble.  But sulfates of Ca2+, Sr2+, Ba2+, Pb2+, Ag+, are insoluble.

Insoluble compounds in water:

Most of the salts of (CO32-),(PO43-),(C2O42-),(CrO42-)and(S2-) are insoluble but some of the salts of NH4+, alkali metal cations and BaS are soluble.

Most of the metal hydroxides and oxides are insoluble in water bit some of the alkali metal hydroxides, Ba(OH)2and Sr(OH)2 are soluble in water.

Water soluble compounds are ionize in water and conduct the electricity, strongly conduct the electricity compounds are completely soluble in water.  Slightly soluble compounds are weak conductor of electricity.

Explanation of Solution

NH3 is very weak conductor of electricity because, NH3 will not dissociate (ionize) in water

(b)

Interpretation Introduction

Interpretation:

The compound (s) that conduct only very weak electricity when dissolved in water should be identified.

Concept introduction:

Acids can donate the H+ ion, base can accept the H+ ion or donate the OH- ion,

strong acids or strong bases are ionize in water very easily, weak acid or weak bases are ionize very slowly.

strong acid and sarong base are one that completely ionizes (dissociates) in a solution (provided there is sufficient solvent).  In water, acid HA dissolves and gives H+ (as hydronium ion H3O+ ion).  Bases dissolve and gives OH- ion.

Conductor of electricity depends on the movements of the ions in solution, ions gets separated, it behaves as strong conductor of electricity.  If the ions not completely dissociate that will be a very weak conductor of electricity

Strong electricity conductors are strong acids and weak bases.

Weak electricity conductors are weak acid and weak bases.

Soluble compounds in water

Almost all the salts of Na+, K+, NH4+,(NO3-),(ClO3-),(ClO4-)and(CH3CO2-) are soluble.

Almost all the salts of Cl-, Br-, I-(halides) are soluble.  But some of the halides are (Ag+, Hg22+, Pb2+) are insoluble.

Salts of F- are soluble.  But some of the fluoride salt of Mg2+, Ca2+, Sr2+, Ba2+, Pb2+ are insoluble.

Salts of sulfate (SO42-) are soluble.  But sulfates of Ca2+, Sr2+, Ba2+, Pb2+, Ag+, are insoluble.

Insoluble compounds in water:

Most of the salts of (CO32-),(PO43-),(C2O42-),(CrO42-)and(S2-) are insoluble but some of the salts of NH4+, alkali metal cations and BaS are soluble.

Most of the metal hydroxides and oxides are insoluble in water bit some of the alkali metal hydroxides, Ba(OH)2and Sr(OH)2 are soluble in water.

Water soluble compounds are ionize in water and conduct the electricity, strongly conduct the electricity compounds are completely soluble in water.  Slightly soluble compounds are weak conductor of electricity.

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Chapter 3 Solutions

Chemistry & Chemical Reactivity
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Ch. 3.5 - In each of the following cases, aqueous solutions...Ch. 3.5 - Aqueous solutions of the two reactants listed...Ch. 3.5 - What is the net ionic equation for the reaction of...Ch. 3.6 - (a) Write a balanced equation for the reaction...Ch. 3.6 - Write the balanced, overall equation and the net...Ch. 3.6 - Which of the following is a strong add in aqueous...Ch. 3.6 - 2. The hydrogen phosphate ion is amphiprotic....Ch. 3.6 - What is the net ionic equation for the reaction of...Ch. 3.6 - Identify the basic oxide from those listed below....Ch. 3.7 - Barium carbonate, BaC0)3, is used in the brick,...Ch. 3.7 - Which of the following compounds, when treated...Ch. 3.8 - Assign an oxidation number to the underlined atom...Ch. 3.8 - The following reaction is used in a device for...Ch. 3.8 - 1. What is the oxidation number of Mn in...Ch. 3.8 - 2. Which of the following reactions are...Ch. 3.8 - 3. 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