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प्रश्न
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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उत्तर
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.
संबंधित प्रश्न
What is : aqua regia
What is the fixation of Nitrogen?
During thunderstorm, rain water contains nitric acid. Explain with reactions.
Give reason why concentrated nitric acid prepared in the laboratory is yellow in colour. State how the colour of the acid is removed.
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 of the following reaction.
Sulphur can be converted to sulphuric acid using concentrated nitric acid.
Write equation to show the reaction between the following:
Copper and concentrated nitric acid.
Write a balanced equation for following :
Action of cold and dilute nitric acid on copper
What happens when
Caustic soda solution is added to Cu(NO3)2 solution and product boiled.
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.
