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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.
संबंधित प्रश्न
Name the Following:
Salt referred to as chile saltpeter.
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Brown ring disappear if the test tube is disturbed.
What happen when (Given balanced equation):
Limestone reacts with nitric acid?
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
Give reason for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitatre should not be heated very strongly, above 200°C
What do you see when concentrated nitric acid is added to copper?
Name the gas evolved:
The gas produced on heating sodium nitrate.
What happens when
Common salt solution is added to silver nitrate solution and NH3 solution add to it.
From the following list of substances, choose one substance in the case which matches the description given below:
Ammonium nitrate, calcium hydrogen carbonate, copper carbonate, lead nitrate, potassium nitrate, sodium carbonate, sodium hydrogen carbonate, zinc carbonate.
A Substance that gives off only oxygen when heated.
