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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

Figure 15-2 summarizes the classic method for separating a mixture of common cations by selective precipitation. Explain the chemistry involved with each of the four steps in the diagram.

Interpretation Introduction

Interpretation: The figure showing the separation of common cations by selective precipitation is given. The chemistry involved with each step in Figure 152 is to be stated.

Concept introduction: The qualitative analysis for the detection of cations present in a mixture involves the categorization of common cations into five groups and then these groups are further treated for the separation of cations present in the mixture and for their identification.

Explanation

Explanation

To determine: The chemistry involved with each step in Figure 152 .

The first step shows the addition of HCl . It’s main purpose is the precipitation of insoluble chlorides of some metals like Hg , Ag and Pb . The second step involves the addition of H2S that leads to the formation of insoluble sulphides of metals like Bi , Cu , Cd Pb , Hg , Sn , As , Sb

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