Chapter 15, Problem 15.27P

a)

Interpretation Introduction

Interpretation:

The voltage generated by the pH gradient, when the pH difference across the membrane of glass electrode has to be calculated.

Concept introduction:

pH measurement with a glass electrode:

The glass electrode used to calculate pH is the best collective ion-selective electrode.

When T= $\text{298}\text{.15}\text{K}$

The value of $\text{(RT}\text{ln}\text{10)}/\text{F}$ is $\text{59}\text{.16}\text{mV}$.

Voltage = Difference in pH $\times$ factor value

b)

Interpretation Introduction

Interpretation:

The voltage generated by the pH gradient, when the pH difference across the membrane of glass electrode has to be calculated.

Concept introduction:

pH measurement with a glass electrode:

The glass electrode used to calculate pH is the best collective ion-selective electrode.

When T= $\text{310}\text{.15}{\text{K(37}}^{\text{0}}\text{C)}$

The value of $\text{(RT}\text{ln}\text{10)}/\text{F}$ is $\text{61}\text{.54}\text{mV}$.

Voltage = Difference in pH $\times$ factor value