Chapter 10, Problem 128A

(a)

Interpretation Introduction

Interpretation: To determine the formula of the given compound.

Concept Introduction: The chemical symbols make up the molecular formula. Additionally, it includes a list of the molecule's constituent elements as well as numeric subscripts that indicate the number of atoms in each element. It is a method of communicating data regarding chemical ratios.

Answer to Problem 128A

The formula of the potassium nitrate will be ${\text{KNO}}_{\text{3}}$

Explanation of Solution

The valency of potassium is +1and represented by K as well as nitrate is -1which is represented as NO3-. Now, by interchanging the valency of each other we get, ${\text{KNO}}_{\text{3}}$ as a molecular formula of potassium nitrate.

Hence, the formulas of potassium nitrate are ${\text{KNO}}_{\text{3}}$ .

(b)

Interpretation Introduction

Interpretation: To determine the formula of the given compound.

Concept Introduction: The chemical symbols make up the molecular formula. Additionally, it includes a list of the molecule's constituent elements as well as numeric subscripts that indicate the number of atoms in each element. It is a method of communicating data regarding chemical ratios.

Answer to Problem 128A

The formula of the copper (II) oxide will be $\text{CuO}$

Explanation of Solution

The valency of copper is given as +2 and represented by Cu as well as oxide is -2 which is represented as ${\text{O}}^{\text{2-}}$ Now, by interchanging the valency of each other we get, $\text{CuO}$ as a molecular formula of copper oxide.

Hence, the formulas of potassium nitrate are $\text{CuO}$ .

(c)

Interpretation Introduction

Interpretation: To determine the formula of the given compound.

Concept Introduction: The chemical symbols make up the molecular formula. Additionally, it includes a list of the molecule's constituent elements as well as numeric subscripts that indicate the number of atoms in each element. It is a method of communicating data regarding chemical ratios.

Answer to Problem 128A

The formula of the magnesium nitride will be ${\text{Mg}}_{\text{3}}{\text{N}}_{\text{2}}$

Explanation of Solution

The valency of magnesium is given as +2 and represented by ${\text{Mg}}^{\text{2+}}$ as well as nitride is -3 which is represented as N-3. Now, by interchanging the valency of each other we get, ${\text{Mg}}_{\text{3}}{\text{N}}_{\text{2}}$ as a molecular formula of Magnesium Nitride The chemical or molecular formula of the Magnesium Nitride Formula is  ${\text{Mg}}_{\text{3}}{\text{N}}_{\text{2}}$ .

(d)

Interpretation Introduction

Interpretation: To determine the formula of the given compound.

Concept Introduction: The chemical symbols make up the molecular formula. Additionally, it includes a list of the molecule's constituent elements as well as numeric subscripts that indicate the number of atoms in each element. It is a method of communicating data regarding chemical ratios.

Answer to Problem 128A

The formula of the silver fluoride will be $\text{AgF}$

Explanation of Solution

The valency of silver is given as +1 and represented by Ag as well as fluoride is -1 which is represented as ${\text{F}}^{\text{-}}$ . Now, by interchanging the valency of each other we get, $\text{AgF}$ as a molecular formula of silver fluoride.

Hence, the formulas of silver fluoride. are $\text{AgF}$