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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

In 1886 Eugene Goldstein observed positively charged particles moving in the opposite direction to electrons in a cathode ray tube (illustrated below). From their mass, he concluded that these particles were formed from residual gas in the tube. For example, if the cathode ray tube contained helium, the canal rays consisted of He+ ions. Describe a process that could lead to these ions.

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Canal rays. In 1886, Eugene Goldstein detected a stream of particles traveling in the direction opposite to that of the negatively charged cathode rays (electrons). He called this stream of positive particles "canal rays:"

Interpretation Introduction

Interpretation:

The process that leads to canal rays should be described.

Concept introduction:

The canal rays are positive charged ions moving in the opposite direction to electrons in a cathode ray tube (Eugene Goldstein experiment).  The electrons or cathode rays move from cathode to anode in a cathode ray tube when a high electrical potential is applied in between cathode and anode.

Explanation

When a high electrical potential is applied in between cathode and anode, a luminous rays are extending from the cathode or in the opposite direction of cathode rays is called canal rays.

These positively charged canal rays are formed by the residual gases presented in the cathode ray tube, helium, hydrogen and etc...

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