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Questions
State one relevant observation for the following:
When crystals of copper nitrate are heated in a test tube.
State one observation:
Copper nitrate crystals are heated in a test tube.
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Solution
On heating, the greenish-blue copper nitrate crystals decompose to form a black copper(II) oxide residue, and reddish-brown nitrogen dioxide gas is evolved.
RELATED QUESTIONS
Cold, dilute nitric acid reacts with copper to give ______.
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 ______________.
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What is : aqua regia
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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.
Write the balanced equation for the following:
Action of heat on AgNO3
How would you separate gold from a mixture of gold and copper filling?
Write balanced equation to show the reaction between the sulphur and hot concentrated nitric acid.
Write sqauential observation for effect of heat on Copper nitrate.
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.
