v. M saturated solution of [Cd(NH_(3))_(4)]Cl_(2) 6. Suggest a scheme for analyzing a solution containing the following ions: Pb^2+;Hg_(2)^2+;NO_(3)^- . What is the color of the solution? Write the equations of analytical reactions.

Question

Answer 1

To analyze a solution containing the ions

,

, and

, we can use a combination of precipitation and complexation reactions. Here is a suggested scheme:1. **Precipitation of

:** - Add a few drops of ammonium hydroxide (NH

) solution to the solution. This will precipitate

as

. - **Equation:**

2. **Precipitation of

:** - After the

precipitate has formed, add more ammonium hydroxide to the solution. This will precipitate

as

. - **Equation:**

3. **Detection of

:** - The remaining solution should contain

. To confirm the presence of

, add a few drops of silver nitrate (AgNO

) solution. A white precipitate of

will form if

is present. - **Equation:**

**Color of the Solution:**- The solution will initially be colorless. After the formation of

and

precipitates, the solution may appear slightly cloudy due to the presence of these precipitates.**Summary of Analytical Reactions:**1.

2.

3.

This scheme allows for the identification and differentiation of the ions

,

, and

through a combination of precipitation and complexation reactions.

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