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प्रश्न
State one appropriate observation of the following:
Which gas is evolved when potassium sulphite with dilute hydrochloric acid.
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उत्तर
Ethene gas decolourises the purple colour of KMnO4, whereas ethane does not decolourise KMnO4 solution.
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संबंधित प्रश्न
How will you prepare hydrochloric acid in laboratory? OR
Describe briefly the method employed to dissolve hydrogen chloride gas in water as it is prepared. What is the purpose of funnel while preparing hydrochloric acid from HCI gas?
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.
What would happen if :
Concentrated hydrochloric acid is kept open.
Give two tests for hydrochloric acid.
Write the uses of hydrochIoric acid.
Write a balanced equation for the reaction of zinc and dilute hydrochloric acid.
Aqua regia is a mixture of ______.
State one appropriate observation of the following:
Copper sulphate is treated with dilute hydrochloric acid.
State your observation when :
Dilute hydrochloric acid is added to copper carbonate.
