Chapter 18, Problem 18.24P

(a)

Interpretation Introduction

Interpretation:

Concentration of nitrite nitrogen has to be calculated by construction of calibration line.

Concept Introduction:

To determine the unknown concentration standard curve or calibration curve is plotted against nitrite concentration for different unknown standards.

(b)

Interpretation Introduction

Interpretation:

Molarity of nitrite nitrogen in aquarium has to be calculated.

Concept Introduction:

Formula to compute molarity from mass is as follows:

  $M\left(\text{mol/L}\right)=\frac{w}{\text{M}}$

Here,

$V$ denotes volume in milliliters.

$\text{M}$ denotes molar mass.

$M$ denotes molarity.

$w$ denotes mass in grams.