Chapter 8, Problem 96A

Interpretation Introduction

(a)

Interpretation:

For the molecule silicon dioxide, formula needs to be given.

Concept introduction:

A binary compound comprises of two nonmetal atoms. For naming this compound, first write the name of first element, then second element formula is named by using its root and adding suffix-ide. Prefix is used to identify the atom’s number in each element.

Answer to Problem 96A

Formula of silicon dioxide is ${\text{SiO}}_2$.

Explanation of Solution

From the name silicon dioxide, it is clear that one silicon and 2 oxygen is present in this molecule. Prefix di represents 2. Symbol of silicon is Si and oxygen is O. While writing a chemical formula second element is named by using its root with adding suffix −ide. Hence, the formula of the molecule is ${\text{SiO}}_2$.

Interpretation Introduction

(b)

Interpretation:

Formula of bromous acid needs to be given.

Concept introduction:

Oxyacid contains one H atom and oxyanion. Oxyanions are polyatomic ion having one or more oxygen atoms. In the naming of oxyacid, first identify the oxanion. The first word of an oxyacid’s name comprises of the root of the oxyanion and the prefix per- or hypo- if it is part of the name, and a suffix. If the oxyanion’s name ends with the -ate suffix, replace it with the -ic suffix. If the name of the oxyanion ends with the suffix -ite, replace it with the suffix -ous.

Answer to Problem 96A

Formula of bromous acid is ${\text{SiCl}}_4$.

Explanation of Solution

From the name bromous acid, it is clear that it is formed from bromite $\left({\text{BrO}}_2^{-}\right)$ acid. The suffix −ite is replaced by −ous. Hence, the formula of the molecule is ${\text{HBrO}}_2$.

Interpretation Introduction

(c)

Interpretation:

Formula of chlorine trifluoride needs to be given.

Concept introduction:

A binary compound comprises of two nonmetal atoms. For naming this compound, first write the name of first element, then second element formula is named by using its root and adding suffix-ide. Prefix is used to identify the atom’s number in each element.

Answer to Problem 96A

Formula of chlorine trifluoride is ${\text{ClF}}_3$.

Explanation of Solution

From the name chlorine trifluoride, it is clear that one chlorine and 3 fluoride is present in this molecule. Prefix tri represents 3. Symbol of chlorine is Cl and fluorine is F. Prefix tri represents 3. While writing a chemical formula second element is named by using its root with adding suffix −ide. Hence, the formula of the molecule is ${\text{ClF}}_3$.

Interpretation Introduction

(d)

Interpretation:

Formula of hydrobromic acid needs to be given.

Concept introduction:

A binary acid comprises of hydrogen and one other atom. For naming this acid, first write the name of the hydrogen part by prefix hydro. The root of the second element is added by suffix −ic.

Answer to Problem 96A

Formula of hydrobromic acid is $\text{HBr}$.

Explanation of Solution

From the name hydrobromic acid, it is clear that the first part is the prefix of hydro that means it contains H. And second element name is bromine. The root of second element is −ine is replaced by -ic. Hence, the formula of the molecule is $\text{HBr}$.