Chapter 15, Problem 15.42P

Interpretation Introduction

Interpretation:

The potential if the pH were lowered to $\text{1}\text{.1}$ and the ionic strength were kept constant has to be calculated.

Concept Introduction:

Selectivity coefficient:

Selectivity is an amount of a method’s freedom from interferences.

The selectivity of a process for the interferent comparative to the analyte is well-defined by a selectivity coefficient

${\text{K}}_{\text{A,I}}\text{=}\frac{{\text{k}}_{\text{I}}}{{\text{k}}_{\text{A}}}$

Ion-selective electrode:

An ion-selective electrode (ISE) best known as a specific ion electrode (SIE), is a sensor (or transducer) that transforms the activity of a specific ion dissolved in a solution into an electrical potential.

Ion-selective electrode obeys following equation.

$\text{E=constant-0}\text{.05916log}\left[{\text{CN}}^{\text{-}}\right]$