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प्रश्न
Give one test to distinguish between the following pair of chemicals.
Zinc nitrate solution and calcium nitrate solution
Give a chemical test to distinguish between calcium nitrate solution and zinc nitrate solution.
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उत्तर १
Zinc nitrate and calcium nitrate solutions can be distinguished by reaction with ammonium hydroxide. Zinc forms a white gelatinous ppt. In contrast, calcium hydroxide does not precipitate even when excess ammonium hydroxide is present.
\[\ce{Zn(NO3)2 + 2NH4OH -> \underset{White gelatinous ppt.}{Zn(OH)2 v} + 2NH4NO3}\]
उत्तर २
Add a small amount of sodium hydroxide solution to each of the solutions, followed by an excess amount. A fine white precipitate is generated with calcium nitrate, which remains insoluble in excess sodium hydroxide. When zinc nitrate dissolves in too much sodium hydroxide, a gelatinous white precipitate is produced.
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संबंधित प्रश्न
How will you prepare the following from nitric acid?
copper nitrate
Name a solution which absorbs nitric oxide.
Name the oxide of nitrogen which turns brown on exposure to air. How is it prepared?
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
Can we use conc. HCl in place of Conc. H2SO4 ?
Write balanced equation and name the product formed when :
Sodium hydrogen carbonate is added to nitric acid.
What do you observe when?
Concentrated nitric acid is dropped on a hot surface?
Dilute nitric acid is generally considered a typical acid except for its reaction with metals. In what way is dilute nitric acid different from other acids when it reacts with metals?
Name the gas evolved:
The gas produced on heating sodium nitrate.
Explain the following:
Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
