Advertisements
Advertisements
प्रश्न
Distinguish by a chemical test sodium chloride and sodium sulphide.
Advertisements
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
Write a balanced chemical equation for Action of dilute hydrochloric acid on magnesium sulphite.
Write a balanced equation for the preparation of the following salts:
Zinc carbonate from Zinc sulphate
Write the name and formula of one salt each which contains:
two molecules of water of crystallisation
Write the name and formula of one salt each which contains:
five molecules of water of crystallisation
You are asked to prepare hard water in your laboratory. Select a group from the following groups of salts, any salt of which you may dissolve in distilled water to obtain hard water.
(A) NaCl; Na2SO4; KCl
(B) NaCl; CaCl2; KCl
(C) CaCl2; CaSO4; MgSO4
(D) Na2SO4; CaSO4; MgSO4
Define the following term:
Efflorescence
Define the following term:
Water of crystallization
Name gases which has a sour taste.
Identify the following substance:
Gas C has an offensive smell like rotten eggs.
Salt is ______ in nature.
