2CLabManual201303

For example if the hyphenated numbers read 10686 24

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Unformatted text preview: of the calcium carbonate in your dry unknown samples. Please enter your room number, locker series and locker number which is the hyphenated numbers embossed on your locker. For example, if the hyphenated numbers read, 10686-24, your room number is 1068. 29 30 Introduction to Inorganic Qualitative Analysis INTRODUCTION In this experiment you will be introduced in an abbreviated way to systematic methods that chemists have traditionally used to identify the cationic constituents of a mixture. In most such schemes, including this one, a sequence of precipitating agents is used to separate the original mixture into smaller groups, each of which may contain more than one constituent. Each of the smaller groups is then examined further. The elements that you will be focusing on are eight of the twelve metallic constituents of the third long row of the periodic table: K, Ca, Cr, Mn, Fe, Co, and Zn. You will first encounter them as 0.05 M aqueous solutions of nitrate salts. During the course of the experiment some of these elements may change their oxidation states one or more times. The scheme you will be us...
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This note was uploaded on 04/09/2013 for the course CHE CHE 2C taught by Professor Nasiri during the Spring '07 term at UC Davis.

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