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प्रश्न
State one relevant observation for the following:
When crystals of copper nitrate are heated in a test tube.
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उत्तर
After heating, the greenish blue crystals of copper nitrate will transform into a black residue of copper oxide and release nitrogen dioxide, a reddish brown gas.
संबंधित प्रश्न
Fill in the blanks using the appropriate words given below :
(Sulphur dioxide, nitrogen dioxide, Nitric oxide, Sulphuric acid)
Hot, concentrated nitric acid reacts with sulphur to form ______________.
Write a balanced equation for the action of warm water on magnesium nitride.
What is aqua fortis?
Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO3. State the reason.
Write a balanced equation and name the products formed when sodium hydrogen carbonate is added to nitric acid.
Identify the substance underlined:
The dilute acid which is an oxidizing agent.
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.
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 conc. Nitric acid on sulphur
From the formulae listed below, Choose, one, corresponding to the salt having the given description:
AgCl, CuCO3, CuSO4.5H2O, KNO3, NaCl, NaHSO4, Pb(NO3)2, ZnCO3, ZnSO4, 7H2O.
On heating this, salt changes from green to black.
