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प्रश्न
Distinguish by a chemical test sodium chloride and sodium sulphide.
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उत्तर
When diluted sulphuric acid is added to sodium sulphide and heated, hydrogen sulphide gas is produced, which smells like rotten eggs and turns lead acetate paper black.
\[\ce{Na2S + H2SO4 -> H2S ^ + Na2SO4}\]
When concentrated sulphuric acid is exposed to sodium chloride and heated, HCl gas is produced, resulting in dense white vapours when a glass rod dipped in ammonia is brought near it.
\[\ce{NaCl + H2SO4 -> HCl ^ + NaHSO4}\]
संबंधित प्रश्न
The property by which certain hydrated salts, when left exposed to the atmosphere, lose their water of crystallization and crumble into powder.
Name the raw material used for the production of caustic soda.
Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid
Which of the following salts will give an aqueous solution having pH of almost 7?
(a) NH4NO3
(b) NH4Cl
(c) CaCl2
(d) KCl
What is a ‘salt’?
Name a salts whose solubility increases with temperature.
Name a salt whose solubility decreases with temperature.
Give four substances which contain water of crystallization and write their common name.
Taking sodium carbonate as an example, give the meaning of the following terms:
Water of crystallization
Distinguish by a chemical test sodium hydroxide solution and ammonium hydroxide solution.
