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Introductory Chemistry: A Foundati...

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

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Chapter
Section
BuyFindarrow_forward

Introductory Chemistry: A Foundati...

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

If sodium chloride (table salt) is melted and then subjected to an electric current, elemental

gas is produced, along with sodium metal.

Interpretation Introduction

Interpretation:

To determine the gas produced when sodium chloride is melted and then subject to an electric current.

Concept Introduction:

In electrolysis process, when electricity is passed through ionic substances they get dissociated into simple substances. For this process, ions should be free to move. When they are dissolved in water, they get dissociated and free to move. Here, positive ions move towards attracted to cathode where reduction takes place and negative ions move towards anode where oxidation takes place.

Explanation

The equation of electrolysis of table salt or sodium chloride is following:

2 NaCl (aq)2 Na(s)+Cl2(g)

The following products are found on the electrolysis of molten sodium chloride:

  1. Chlorine gas.
  2. Molten sodium.

Electrolysis of molten NaCl :

NaCl(aq)Na+(aq)

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