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प्रश्न
What happens when
Caustic soda solution is added to Cu(NO3)2 solution and product boiled.
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उत्तर
When Caustic soda solution is added to Cu(NO3)2 solution, the following reaction takes place:
Cu(NO3)2(aq) + 2NaOH(aq) → Cu(OH)2(S) + 2NaNO3(aq)
When we heat it further, the greenish blue copper hydroxide decomposes to form slightly black ppt. of copper oxide.
\[\ce{Cu(OH)2(S) ->[\Delta] CuO(s) + H2O(g)}\]
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संबंधित प्रश्न
Fill in the blanks using the appropriate words given below :
(Sulphur dioxide, nitrogen dioxide, Nitric oxide, Sulphuric acid)
Cold, dilute nitric acid reacts with copper to give ___________.
What is : aqua regia
Conc. Nitric acid prepared in laboratory is yellow in colour why? How is this colour removed?
Give reasons for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitrate should not be heated very strongly above 200°C.
Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO3. State the reason.
Identify the substance underlined:
The dilute acid which is an oxidizing agent.
What is the oxidizing agent in ostwald process ?
Write the balanced equation for the following:
Action of heat on AgNO3
The following statement is correct only under certain conditions. Rewrite the statement including the appropriate condition(s) and underline it in your answer.
Copper and nitric acid react together to produce nitrogen dioxide.
Convert the following reaction into a balanced chemical equation:
Ammonia to nitric oxide using oxygen and platinum catalyst.
