Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN: 9781337399074
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 44PS

Give the formula and the number of each ion that makes up each of the following compounds:

(a) Mg(CH3CO2)2

(b) Al(OH)3

(c) CuCO3

(d) Ti(SO4)2

(e) KH2PO4

(f)CaHPO4

(a)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

For the given ionic compounds, the number and formula of constituted ions present are needed to be determined.

Concept introduction:

Ionic compounds are formed by electrostatic attraction between ions such as monoatomic ions and polyatomic ions; in which positively charged ions is known as cations and negatively charged ions are known as anions.

The sum of charges of ions present in an ionic compound is equals to net charge of the compound.

Answer to Problem 44PS

Mg(CH3CO2)2 is composed of one Mg2+ ion and two CH3CO2 ion.

Explanation of Solution

In the given ionic compound Mg(CH3CO2)2, there are Mg ion and CH3CO2 ions present.  Since the Mg is group IIA element, then the charge will be 2+ and the charge of CH3CO2 is 1-, so two CH3CO2 ions are required to balance the 2+ charge of Mg2+ ion.

The relative number of each ion is indicated in suffix of each ion.

That is,

One Mg2+ ion and two CH3CO2 ions are present in Mg(CH3CO2)2 compound.

(b)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

For the given ionic compounds, the number and formula of constituted ions present are needed to be determined.

Concept introduction:

Ionic compounds are formed by electrostatic attraction between ions such as monoatomic ions and polyatomic ions; in which positively charged ions is known as cations and negatively charged ions are known as anions.

The sum of charges of ions present in an ionic compound is equals to net charge of the compound.

Answer to Problem 44PS

Al(OH)3 is composed of one Al3+ ion and three OH ions.

Explanation of Solution

In the given ionic compound Al(OH)3, there are Al ion and OH ion present. Since the charge of OH is 1-, then the charge of three OH is 3+, so the charge of Al must be 3+ to balance the charge of the three OH ions .

The relative number of each ion is indicated in suffix of each ion.

That is,

One Al3+ ion and three OH ions ion are present in Al(OH)3 compound.

(c)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

For the given ionic compounds, the number and formula of constituted ions present are needed to be determined.

Concept introduction:

Ionic compounds are formed by electrostatic attraction between ions such as monoatomic ions and polyatomic ions; in which positively charged ions is known as cations and negatively charged ions are known as anions.

The sum of charges of ions present in an ionic compound is equals to net charge of the compound.

Answer to Problem 44PS

CuCO3 is composed of one Cu2+ ion and one CO32 ion.

Explanation of Solution

In the given ionic compound CuCO3, there are Cu ion and CO3 ion present. Since the charge of CO3 is 2-, so the charge of Cu must be 2+.

The relative number of each ion is indicated in suffix of each ion.

That is,

One Cu2+ ion and one CO32 ion are present in CuCO3 compound.

(d)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

For the given ionic compounds, the number and formula of constituted ions present are needed to be determined.

Concept introduction:

Ionic compounds are formed by electrostatic attraction between ions such as monoatomic ions and polyatomic ions; in which positively charged ions is known as cations and negatively charged ions are known as anions.

The sum of charges of ions present in an ionic compound is equals to net charge of the compound.

Answer to Problem 44PS

Ti(SO4)2 is composed of one Ti2+ ions and two SO42 ions.

Explanation of Solution

In the given ionic compound Ti(SO4)2, there are Ti ion and SO4 ion present. Since the charge of SO4 is 2-, then the charge of Ti must be 2+.

The relative number of each ion is indicated in suffix of each ion.

That is,

One Ti2+ ions and two SO42 ions are present in Ti(SO4)2 compound.

(e)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

For the given ionic compounds, the number and formula of constituted ions present are needed to be determined.

Concept introduction:

Ionic compounds are formed by electrostatic attraction between ions such as monoatomic ions and polyatomic ions; in which positively charged ions is known as cations and negatively charged ions are known as anions.

The sum of charges of ions present in an ionic compound is equals to net charge of the compound.

Answer to Problem 44PS

KH2PO4 is composed of one KH23+ ion and one PO43 ion.

Explanation of Solution

In the given ionic compound KH2PO4, there are oneKandtwoH ions and PO4 ion present. Since the K is group 1A element, then the charge will be 1+, similarly the charge of hydrogen ions is 1+ and the charge of PO4 is 3-. So there will be oneKandtwoH for each PO43 ion.

The relative number of each ion is indicated in suffix of each ion.

That is,

One oneK+andtwoH+ ion and one PO43 ion are present in KH2PO4 compound.

(f)

Expert Solution
Check Mark
Interpretation Introduction

Interpretation:

For the given ionic compounds, the number and formula of constituted ions present are needed to be determined.

Concept introduction:

Ionic compounds are formed by electrostatic attraction between ions such as monoatomic ions and polyatomic ions; in which positively charged ions is known as cations and negatively charged ions are known as anions.

The sum of charges of ions present in an ionic compound is equals to net charge of the compound.

Answer to Problem 44PS

CaHPO4 is composed of one CaH3+ ion and one PO43 ion.

Explanation of Solution

In the given ionic compound CaHPO4, there are CaandH ion and PO4 ion present. Since the Ca is group IIA element, then the charge will be 2+, similarly the charge of hydrogen ions is 1+ and the charge PO4 is 3-. So there will be oneCaandoneH for each PO43 ion.

The relative number of each ion is indicated in suffix of each ion.

That is,

One oneCa2+andoneH+ ion and one PO43 ion are present in CaHPO4 compound.

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