Chapter 18, Problem 117A

(a)

Interpretation Introduction

Interpretation: The ${\text{NaClO}}_{\text{4}}$ ion is named charge on an anion is given.

Concept Introduction: Positive ions, commonly known as cations, are particles with a lesser number of electrons than protons. If a particle has a larger number of electrons than protons, it is an anion or negative ion.

Answer to Problem 117A

The compound ${\text{NaClO}}_{\text{4}}$ is called sodium perchlorate and has $-1$ charge on its anion.

Explanation of Solution

  ${\text{NaClO}}_{\text{4}}$ consists of a metal cation and a polyatomic anion. It contains ${\text{Na}}^{+}$ cation and ${\text{ClO}}_4^{-}$ anion with a total charge of zero. Therefore, this compound is known as sodium perchlorate.

The charge on ${\text{NaClO}}_{\text{4}}$ anion, ${\text{ClO}}_4^{-}$ ion is $-1$ .

(b)

Interpretation Introduction

Interpretation: The ${\text{KMnO}}_{\text{4}}$ ion is named charge on an anion is given.

Concept Introduction: Positive ions, commonly known as cations, are particles with a lesser number of electrons than protons. If a particle has a larger number of electrons than protons, it is an anion or negative ion.

Answer to Problem 117A

The compound ${\text{KMnO}}_{\text{4}}$ is called potassium permanganate and has $-1$ charge on its anion.

Explanation of Solution

  ${\text{KMnO}}_{\text{4}}$ consists of a metal cation and a polyatomic anion. It contains ${\text{K}}^{+}$ cation and ${\text{MnO}}_4^{-}$ anion with a total charge of zero. Therefore, this compound is called potassium permanganate.

The charge on ${\text{KMnO}}_{\text{4}}$ anion, ${\text{MnO}}_4^{-}$ ion is $-1$ .

(c)

Interpretation Introduction

Interpretation: The ${\text{Ca}}_3{\left({\text{PO}}_{\text{4}}\right)}_2$ ion is named charge on an anion is given.

Concept Introduction: Positive ions, commonly known as cations, are particles with a lesser number of electrons than protons. If a particle has a larger number of electrons than protons, it is an anion or negative ion.

Answer to Problem 117A

The compound ${\text{Ca}}_3{\left({\text{PO}}_{\text{4}}\right)}_2$ is called calcium phosphate and has $-1$ charge on its anion.

Explanation of Solution

  ${\text{Ca}}_3{\left({\text{PO}}_{\text{4}}\right)}_2$ consists of a metal cation and a polyatomic anion. It contains ${\text{Ca}}^{2+}$ cation and ${\text{PO}}_4^{-}$ anion with a total charge of zero. Therefore, this compound is called calcium phosphate.

The charge on ${\text{Ca}}_3{\left({\text{PO}}_{\text{4}}\right)}_2$ anion, ${\text{PO}}_4^{-}$ ion is $-1$ .

(d)

Interpretation Introduction

Interpretation: The ${\text{MgCO}}_{\text{3}}$ ion is named charge on an anion is given.

Concept Introduction: Positive ions, commonly known as cations, are particles with a lesser number of electrons than protons. If a particle has a larger number of electrons than protons, it is an anion or negative ion.

Answer to Problem 117A

The compound ${\text{MgCO}}_{\text{3}}$ is called magnesium carbonate and has $-2$ charge on its anion.

Explanation of Solution

  ${\text{MgCO}}_{\text{3}}$ consists of a metal cation and a polyatomic anion. It contains ${\text{Mg}}^{2+}$ cation and ${\text{CO}}_3^{2-}$ anion with a total charge of zero. Therefore, this compound is called magnesium carbonate.

The charge on ${\text{MgCO}}_{\text{3}}$ anion, ${\text{CO}}_3^{2-}$ ion is $-2$ .

(e)

Interpretation Introduction

Interpretation: The ${\text{Na}}_2{\text{SO}}_4$ ion is named charge on an anion is given.

Concept Introduction: Positive ions, commonly known as cations, are particles with a lesser number of electrons than protons. If a particle has a larger number of electrons than protons, it is an anion or negative ion.

Answer to Problem 117A

The compound ${\text{Na}}_2{\text{SO}}_4$ is called sodium sulfate and has $-2$ charge on its anion.

Explanation of Solution

  ${\text{Na}}_2{\text{SO}}_4$ consists of a metal cation and a polyatomic anion. It contains ${\text{Na}}^{+}$ cation and ${\text{SO}}_4^{2-}$ anion with a total charge of zero. Therefore, this compound is called sodium sulfate.

The charge on ${\text{Na}}_2{\text{SO}}_4$ anion, ${\text{SO}}_4^{2-}$ ion is $-2$ .

(f)

Interpretation Introduction

Interpretation: The ${\text{K}}_2{\text{Cr}}_2{\text{O}}_7$ ion is named charge on an anion is given.

Concept Introduction: Positive ions, commonly known as cations, are particles with a lesser number of electrons than protons. If a particle has a larger number of electrons than protons, it is an anion or negative ion.

Answer to Problem 117A

The compound ${\text{K}}_2{\text{Cr}}_2{\text{O}}_7$ is called potassium dichromate and has $-2$ charge on its anion.

Explanation of Solution

  ${\text{K}}_2{\text{Cr}}_2{\text{O}}_7$ consists of a metal cation and a polyatomic anion. It contains ${\text{K}}^{+}$ cation and ${\text{Cr}}_2{\text{O}}_7^{2-}$ anion with a total charge of zero. Therefore, this compound is called potassium dichromate.

The charge on ${\text{K}}_2{\text{Cr}}_2{\text{O}}_7$ anion, ${\text{Cr}}_2{\text{O}}_7^{2-}$ ion is $-2$ .