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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?
उत्तर
The cation present in solution B is Cu2+. The probable colour of solution B is blue.
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संबंधित प्रश्न
Name
a metallic hydroxide soluble in excess of NH4OH.
Name the metal hydroxides which are:
Sparingly soluble
In caustic soda solution
Name the metal hydroxides which are soluble in caustic soda solution.
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : Pb(NO3)2
Name a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
Choose the correct answer from the options given below :
Metal + alkali → salt + _________
Why the alkali is added drop by drop to the salt solution?
Write balanced equations for a metal that evolves into a gas which burns with a pop sound when boiled with alkali solutions.
Write balanced equation for a metal that evolves a gas which burns with a pop sound when boiled with alkali solution.
Write balanced equations for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
