А00000081 Vanadium against chromium

А00000081 Vanadium against chromium

Content

Introduction 3
I. Literature review 4
1.1 General characteristics of elements and their physical properties 4
1.2 Discovery history of elements 7
1.3 Obtaining metals 8
1.4 Chemical properties of vanadium and chromium 10
1. 5 Application 14
1.6 Comparison of the properties of some compounds of vanadium and chromium 16
II. Experimental 18
2.1 Starting materials 18
2.2 Recovery of vanadium and chromium salts from higher to lower
oxidation state 18
2. 3 Preparation of vanadium (III) chloride and chromium (III) chloride and
visual comparison of their spectral properties 20
Main results and conclusions 22
List of sources used 23