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प्रश्न
When ammonium hydroxide is added to solution B, a pale blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide to give an inky blue solution. Name the cation present in solution B. What is the probable colour of solution B?
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उत्तर
The cation present in solution B is Cu2+. The probable colour of solution B is blue.
संबंधित प्रश्न
State one relevant observation for the following.
Lead nitrate solution is treated with sodium hydroxide solution dropwise till it is excess.
Name a weak alkali.
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : FeCl3
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : ZnSO4
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : Pb(NO3)2
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : CuSO4
Name a metallic hydroxide soluble in excess of NH4OH.
Name: Two coloured ions
Name a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
State your observation when zinc chloride solution, zinc nitrate solution, and zinc sulphate solutions are added individually to barium chloride solution.
