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प्रश्न
What happens when
NH3 solution is added to CuSO4 solution drop by drop and then in excess.
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उत्तर
When NH3 solution is added to CuSO4 solution drop by drop, ammonia ions completely react with copper sulphate and precipitates of copper hydroxide are formed.
CuSO4(aq) + 2NH3(aq) + 2H2O(I) → Cu(OH)2(s) + (NH4)2SO4(aq)
But when we add excess of ammonia, the precipitate dissolves and a soluble complex is formed.
CuSO4(aq) + 4NH3(aq) → [Cu(NH3)4]SO4(aq)
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संबंधित प्रश्न
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
Ammonia is used in the Ostwald process.
What is the ratio of ammonia and air taken in this process?
Write a balanced equation and name the products formed when cupric oxide reacts with nitric acid.
How will you prepare the following from nitric acid?
Sodium nitrate
Name a metal nitrate which on heating is changed into metal oxide.
The nitrate salt which does not give a mixture of NO2 and O2 on heating is ______.
Give three equations of the reaction to prove that nitric acid is an acid.
Give reason for the following:
Nitric acid is used in purification of gold.
Give reason for the following:
Concentrated nitric acid is brown in colour.
Give the name of a soluble lead salt and write the eqution for the action of heat on this salt. Write the equation for the preparation of nitric acid from potassium nitrate.
