Chapter 9, Problem 76A

(a)

Interpretation Introduction

Interpretation: The name of the given compound is to be determined.

Concept Introduction: While naming the bases, the name of the metal is written with their charge in Roman numerals in parenthesis followed by hydroxide. The number of hydroxide ion present depends on the charge of the metal.

Answer to Problem 76A

The name of the compound $\text{Pb}{\left(\text{OH}\right)}_{\text{2}}$ is lead (II) hydroxide.

Explanation of Solution

In the given compound, lead is having two positive charges; so, according to the rules, it can be named lead (II) hydroxide.

(b)

Interpretation Introduction

Interpretation: The name of the given compound is to be determined.

Concept Introduction: While naming the bases, the name of the metal is written with their charge in Roman numerals in parenthesis followed by hydroxide. The number of hydroxide ion present depends on the charge of the metal.

Answer to Problem 76A

The name of the compound $\text{Co}{\left(\text{OH}\right)}_{\text{2}}$ is Cobalt (II) hydroxide.

Explanation of Solution

  $\text{Co}{\left(\text{OH}\right)}_{\text{2}}$ consists of ${\text{Co}}^{\text{2+}}$ ions bonded to two hydroxide ions. It is electrically neutral and is named Cobalt (II) hydroxide.

(c)

Interpretation Introduction

Interpretation: The formula of the given compound is to be determined.

Concept Introduction: While naming the bases, the name of the metal is written with their charge in Roman numerals in parenthesis followed by hydroxide. The number of hydroxide ion present depends on the charge of the metal.

Answer to Problem 76A

The compound copper(II) hydroxide can be chemically represented as $\text{Cu}{\left(\text{OH}\right)}_{\text{2}}$

Explanation of Solution

  $\text{Co}{\left(\text{OH}\right)}_{\text{2}}$ consists of a ${\text{Co}}^{\text{2+}}$ ions bonded to two hydroxide ions. It is electrically neutral and is named Cobalt (II) hydroxide.

(d)

Interpretation Introduction

Interpretation: The formula of the given compound is to be determined.

Concept Introduction: While naming the bases, the name of the metal is written with their charge in Roman numerals in parenthesis followed by hydroxide. The number of hydroxide ion present depends on the charge of the metal.

Answer to Problem 76A

The compound iron (II) hydroxide can be chemically represented as $\text{Fe}{\left(\text{OH}\right)}_{\text{2}}$ .

Explanation of Solution

Iron is a transition metal represented by the symbol Fe. So, the compound can be represented by the chemical formula $\text{Fe}{\left(\text{OH}\right)}_{\text{2}}$ . The subscript two indicates that the compound contains two hydroxide ions.