Chapter 15, Problem 15.22P

(a)

Interpretation Introduction

Interpretation:

Value of $\left[{\text{NH}}_3\right]$ in $100\text{ mL}$ solution has to be calculated.

Concept Introduction:

Potential difference for ion selective electrode is evaluated by expression as follows:

  $E=k+\text{β}\left(\frac{RT\ln 10}{nF}\right)\log \left[\text{X}\right]$

Here,

$\text{β}$ is constant.

$k$ denote intercept.

$\left[\text{X}\right]$ denotes concentration of analyte $\text{X}$ solution.

$E$ denotes potential difference.

(b)

Interpretation Introduction

Interpretation:

Percent of weight of nitrogen in food sample has to be calculated.

Concept Introduction:

Refer to part (a).