Question

Separation and identification of ions group 1,2,3,4,5,6 cation analysis and anion analysis

Answer 1

Answer:

To follow a classic analytical scheme to separate and identify the ions in a known mixture of Group I cations

To then apply this scheme to identify the ions in an unknown mixture of Group I cations.

One common task in analytical chemistry is the identification of the various ions present in a particular sample. For example, if you are an environmental chemist your job may be to recover soil or water samples in order to determine the presence of toxic ions such as Pb2+ or Hg2+2 . A common experimental method used to identify ions in a mixture is called qualitative analysis.

In qualitative analysis, the ions in a mixture are separated by selective precipitation. Selective precipitation involves the addition of a carefully selected reagent to an aqueous mixture of ions, resulting in the precipitation of one or more of the ions, while leaving the rest in solution. Once each ion is isolated, its identity can be confirmed by using a chemical reaction specific to that ion.

Cations are typically divided into Groups, where each group shares a common reagent that can be used for selective precipitation. The classic qualitative analysis scheme used to separate various groups of cations

Explanation:

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