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प्रश्न
State one appropriate observation of the following:
Which gas is evolved when potassium sulphite with dilute hydrochloric acid.
उत्तर
Ethene gas decolourises the purple colour of KMnO4, whereas ethane does not decolourise KMnO4 solution.
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संबंधित प्रश्न
Explain, why (or give reasons for)
Only a very dilute solution of hydrogen chloride in water can be concentrated by boiling the solution while a very concentrated solution would become less concentrated when boiled.
Explain, why (or give reasons for)
A solution of HCl gas in water turns blue litmus red and conducts electricity, while HCI gas dissolves in toluene and it has no effect on litmus and does not conduct electricity.
Fill in the blank:
A constant boiling mixture of water and hydrochloric acid is also called as _______________.
Fill in the blank:
The white precipitate of lead chloride is soluble in _________
Name the gas evolved when an oxide and concentrated hydrochloric acid are heated.
Write equation for the reaction between hydrochloric acid of the following: Bleaching powder
Write equation for the reaction between hydrochloric acid of the following: Oxide of lead
State one reason why tap water is not used to prepare a solution of silver nitrate in the laboratory.
State your observation when :
Dilute hydrochloric acid is added to copper carbonate.
Name the anion present in the following compound:
The action of heat on the insoluble compound C produces a gas which turns lime water turbid.
