Explanation On applying electric field to a capillary tube that contains fluid having dissolved ions, the buffer ions move according to the electrical charges. Hence, one can say that electroosmotic flow occurs when the walls of capillary tube gets charged electrically. Surface contains silanol groups which ionizes to silanate ions at pH more than 2. The cations get attracted to silanate ions forming fixed layer. Just below is the diffuse layer that has more cations. These layers together form the double layer. The migrating cations towards the cathode pulls the solution producing electroosmotic flow. The charge of the capillary walls determines the potential gradient which depends on the density of the silanate ions...

7th Edition

ISBN: 9781305577213

Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher: Cengage Learning

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Question

Chapter 30, Problem 30.2QAP

Interpretation Introduction

Interpretation:

The method by which anelectroosmotic flow can be suppressed needs to be explained.

Concept introduction:

The flow of liquidthat gets influenced by potential gradient across a porous material or capillary tube. This flow is visible in pathways that are small. The electrostatic flow is enabled in those solution that have dissolved ions in insulating solid wherein electro osmotic flow is generated.

Expert Solution & Answer

Chapter 30 Solutions

Principles of Instrumental Analysis

Ch. 30 - Prob. 30.1QAP Ch. 30 - Prob. 30.2QAP Ch. 30 - Prob. 30.3QAP Ch. 30 - Prob. 30.4QAP Ch. 30 - Prob. 30.5QAP Ch. 30 - Prob. 30.6QAP Ch. 30 - Prob. 30.7QAP Ch. 30 - Prob. 30.8QAP Ch. 30 - Prob. 30.9QAP Ch. 30 - Prob. 30.10QAP

Ch. 30 - Prob. 30.11QAP Ch. 30 - Prob. 30.12QAP

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