Chapter 15, Problem 104AP

Interpretation Introduction

(a)

Interpretation:

The mass of $\text{NaCl}$ present in $11.5\text{g}$ of $6.25\text{\%}\text{NaCl}$ solution is to be calculated.

Concept Introduction:

The mass percentage of a compound present in a solution is calculated by dividing the mass of the compound present in the solution by the total mass of the solution and then multiplying it by $100$. The formula for mass percentage is represented as:

$\text{mass}\text{\%}=\frac{\text{M}}{{\text{M}}_{\text{t}}}\times 100\text{\%}$

Where,

• $\text{M}$ represents the mass of the compound present in the solution.
• ${\text{M}}_{\text{t}}$ represents the total mass of solution.

Interpretation Introduction

(b)

Interpretation:

The mass of $\text{NaCl}$ present in $6.25\text{g}$ of $11.5\text{\%}\text{NaCl}$ solution is to be calculated.

Concept Introduction:

The mass percentage of a compound present in a solution is calculated by dividing the mass of the compound present in the solution by the total mass of the solution and then multiplying it by $100$. The formula for mass percentage is represented as:

$\text{mass}\text{\%}=\frac{\text{M}}{{\text{M}}_{\text{t}}}\times 100\text{\%}$

Where,

• $\text{M}$ represents the mass of the compound present in the solution.
• ${\text{M}}_{\text{t}}$ represents the total mass of solution.

Interpretation Introduction

(c)

Interpretation:

The mass of $\text{NaCl}$ present in $54.3\text{g}$ of $0.91\text{\%}\text{NaCl}$ solution is to be calculated.

Concept Introduction:

The mass percentage of a compound present in a solution is calculated by dividing the mass of the compound present in the solution by the total mass of the solution and then multiplying it by $100$. The formula for mass percentage is represented as:

$\text{mass}\text{\%}=\frac{\text{M}}{{\text{M}}_{\text{t}}}\times 100\text{\%}$

Where,

• $\text{M}$ represents the mass of the compound present in the solution.
• ${\text{M}}_{\text{t}}$ represents the total mass of solution.

Interpretation Introduction

(d)

Interpretation:

The mass of $\text{NaCl}$ present in $452\text{g}$ of $12.3\text{\%}\text{NaCl}$ solution is to be calculated.

Concept Introduction:

The mass percentage of a compound present in a solution is calculated by dividing the mass of the compound present in the solution by the total mass of the solution and then multiplying it by $100$. The formula for mass percentage is represented as:

$\text{mass}\text{\%}=\frac{\text{M}}{{\text{M}}_{\text{t}}}\times 100\text{\%}$

Where,

• $\text{M}$ represents the mass of the compound present in the solution.
• ${\text{M}}_{\text{t}}$ represents the total mass of solution.