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प्रश्न
Distinguish by a chemical test, Sodium carbonate and sodium sulphite.
उत्तर
Sodium chloride reacts with H2SO4 to produce HCl gas, while sodium sulphite reacts with H2SO4 to produce sulphur dioxide gas.
\[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2}\]
Sodium sulphite when added to a dilute solution. Sulphuric acid releases a colourless gas with a burning sulphur odour and changes acidified potassium dichromate paper from orange to green.
\[\ce{Na2SO3 + H2SO4 -> Na2SO4 + H2O + SO2}\]
\[\ce{\underset{(Orange)}{K2Cr2O7} + 3SO2 + H2SO4 -> K2SO4 + \underset{(Green)}{Cr2(SO4)3} + H2O}\]
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संबंधित प्रश्न
State one relevant observation for the following:
Anhydrous calcium chloride is exposed to air for some time.
Write a balanced equation for the preparation of the following salts:
Zinc carbonate from Zinc sulphate
Name three chemicals made from common salt (or sodium chloride).
What is a salt?
The aqueous solution of one of the following salts will turn red litmus to blue. This salt is:
(a) potassium sulphate
(b) sodium sulphate
(c) sodium chloride
(d) potassium carbonate
P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn:
red litmus blue?
Consider the following salts:
Na2CO3, NaCl, NH4Cl, CH3COONa, K2SO4, (NH4)2SO4
Which of these salts will give:
basic solutions (or alkaline solutions)?
Give four substances which contain water of crystallization and write their common name.
Name two carbonates do not produce carbon dioxide on heating.
Sodium carbonate is a basic salt because it is a salt of a ____________.
