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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
Give a balanced chemical equation for Laboratory preparation of Nitric acid.
Explain the following:
An all-glass apparatus is used in the laboratory preparation of nitric acid.
Give two chemical equations for the following:
Nitric acid showing as acidic character.
How is nitric acid prepared in a laboratory?
Name the catalyst used in Ostwald process.
Give reason for the following:
In laboratory preparation of nitric acid all the apparatus including cork should be made up of glass.
Give reason for the following :
Nitric acid usually does not yield hydrogen from acids.
Give reason for the following:
Concentrated nitric acid is brown in colour.
Choose the correct answer from the option given below :
Nitric acid on standing develops brownish colour which may be attributed to the presence of :
Write a balanced equation for following :
Reaction of ammonia with nitric acid
