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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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. In which direction do electrons flow in a galvanic cell, from anode to cathode or vice versa?

Interpretation Introduction

Interpretation:

The direction of electron flow in a galvanic cell should be determined.

Concept Introduction:

A galvanic cell is an electrochemical cell, which is powered by an oxidation-reduction reaction. In this cell, the oxidizing and reducing agents are separated so that electrons flow through a wire.

Explanation

A galvanic cell is an electrochemical cell, which is powered by an oxidation-reduction reaction. In this cell, the oxidizing and reducing agents are separated so that electrons can flow through a wire. The oxidizing agent gains electrons and results in being reduced. The electrode where reduction takes place is said to be cathode whereas the reducing agent loses electrons and results in being oxidized. The electrode where oxidation takes place is said to be anode.

Thus, the electrons flow from anode (loss of electron(s)) to cathode (gain of electron(s)) through an external wire.

For example: Daniel cell:

Zn(s) loses electrons to Zn2+

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