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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

If a piece of filter paper (an absorbent paper used in laboratories) is suspended above a beaker of water and just touching the surface, water will slowly move up the paper. What is the name given to this phenomenon, and how is this behavior explained?

Interpretation Introduction

Interpretation: The name of the given phenomenon and the behavior should be explained.

Concept Introduction: Liquid can flow through narrow spaces without the assistance of, or even in opposition to, external forces. It occurs because of intermolecular forces between the liquid and surrounding solid surfaces.

Adhesive forces are attractive forces between molecules of different materials.

Cohesive forces are the intermolecular forces which cause a tendency in liquids to resist separation.

Explanation

Piece of filter paper is floated above the water is due to the phenomenon called capillary rise.

The water gets attracted OH groups present in the paper. These adhesive forces cause the paper to move upwards by the water molecule

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