A black solid P dissolves in warm and dilute HCI to form greenish blue solution Q, but does not give off any gas. The solution Q on treating with ammonium hydroxide forms bluish white precipitates of R. The precipitates of R dissolve in excess of ammonium hydroxide. solution to form deep-blue colouration. Identify solid P and bluish white precipitates of R.
Write equations for
Action of less amount of ammonium hydroxide on Q.

A black solid P dissolves in warm and dilute HCI to form greenish yellow solution Q, but does not give off any gas. The solution Q on treating with ammonium hydroxide forms bluish white precipitates of R. The precipitates of R dissolve in excess of ammonium hydroxide. solution to form deep-blue colouration. Identify solid P and bluish white precipitates of R. Write equations for action of excess of ammonium hydroxide on R.

Tin dissolves in excess of sodium hydroxide solution to form _____________ .

_____ solution will give a white precipitate with excess ammonium hydroxide solution?

The colour of the precipitate formed when ferrous ions react with ammonium hydroxide solution

What products are formed when precipitate formed by the reaction of Hg_(2)^(2+) ions and excess of sodium hydroxide solution is boiled?

A metal 'X' used to make calorimeters reacts with concentrated nitric acid to form a soluble salt Y. When few drops of ammonium hydroxide are added pale blue precipitates 'Z' are obtained. These precipitates dissolve in excess of ammonium hydroxide to form deep blue solution 'A'. Identify the metal X and give all the chemical equations.

Identify the cation in each of the following case Ammonium hydroxide solution when added to the solution B gives white precipitate which dissolves in excess

A metal 'X' normally used for making calorimeters is heated in abundant supply of air until a black coloured residue ' Y' is obtained. This Y reacts with sulphuric acid to form blue coloured salt 'Z'. When to this solution little of ammonium hydroxide was added, pale blue precipitates of 'A' are obtained. This 'A' dissolves in excess of ammonium hydroxide to form a deep blue solution B. Identify the metal X and write the equations for the formation of various compounds i.e., Y, Z, A and B.