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प्रश्न
A student was asked to perform an experiment in the laboratory based on the instructions given:
Observe the picture given below and state one observation for the experiment you would notice on mixing the given solution.
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उत्तर
Blue precipitate dissolves to form an inky blue/deep blue solution.
Explanation:
The light blue precipitate of copper(II) hydroxide (Cu(OH)2) dissolves in excess of ammonium hydroxide due to the formation of a deep blue complex, tetraamminecopper(II) ([Cu(NH3)4]2+), making it soluble.
संबंधित प्रश्न
What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:
ZnSO4
Write a balanced equation for this reaction.
Distinguish by adding:
(a) sodium hydroxide solution and
(b) Ammonium hydroxide solution to
(i) Calcium salt solution and lead salt solution
(ii) Lead salt solution and ferrous salt solution
(iii) copper salt solution and ferrous salt solution
(iv) Fe (II) salt solution and Fe (III) Salt solution
(v) Ferrous nitrate and lead nitrate
Name a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.
Using sodium hydroxide solution, how will you distinguish:
Iron (II) chloride from iron (III) chloride
Using sodium hydroxide solution, how will you distinguish:
Lead hydroxide from magnesium hydroxide.
Three test tubes contain calcium nitrate solution, zinc nitrate solution and lead nitrate solution.Describe the effect of Adding sodium hydroxide solution to each portion in turn till it is in excess.
Using Sodium hydroxide solution, how would you distinguish: Ammonium sulphate from sodium sulphate.
Distinguish by adding:
Sodium hydroxide solution and ammonium hydroxide solution to lead nitrate solution and zinc nitrate solution.
Aqueous lead (II) nitrate can be distinguished from aqueous zinc nitrate by adding any of the following solutions in excess, except:
A student was asked to perform an experiment in the laboratory based on the instructions given:
Observe the picture given below and state one observation for the experiment you would notice on mixing the given solution.
