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प्रश्न
What happens when
Caustic soda solution is added to Cu(NO3)2 solution and product boiled.
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.
\[\ce{Cu(OH)2(S) ->[\Delta] CuO(s) + H2O(g)}\]
APPEARS IN
संबंधित प्रश्न
Name the gas that is produced in the given case:
The action of cold and dilute nitric acid on copper
- Write a balanced chemical equation for the laboratory preparation of nitric acid.
- In the preparation of nitric acid from \[\ce{KNO3}\], concentrated hydrochloric acid is not used in place of concentrated sulphuric acid. Explain why?
- 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.
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.
Choose the correct word from the given options to complete the sentence :
Sulphur can be converted to sulphuric acid using __________ nitric acid.
Write the equation to show the reaction between the following:
Between copper and concentrated nitric acid.
Write equation to show the reaction between the following:
Copper and concentrated nitric acid.
Fill in the blank using the appropriate words given below:
Hot, concentrated nitric add reacts with sulphur to form ______.
Write a balanced equation for following :
Action of cold and dilute nitric acid on copper
Convert the following reaction into a balanced chemical equation:
Ammonia to nitric oxide using oxygen and platinum catalyst.
The diagram given below is a representation of the Industrial preparation of Nitric acid by Ostwald’s process. With respect to the process answer the following questions:
- Write the temperature and the catalyst required during the catalytic oxidation of ammonia.
- Give balanced chemical equation for the reaction occurring duringthe conversion of nitrogen dioxide to nitric acid.
