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प्रश्न
State your observation when dilute hydrochloric acid is added to sodium thiosulphate.
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उत्तर
Thiosulphate and diluted hydrochloric acid combine to form sulphur dioxide, which precipitates yellow sulphur.
\[\ce{Na2S2O3 + 2HCl -> 2NaCl + H2O + SO2 + S ↓}\]
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संबंधित प्रश्न
Explain, why (or give reasons for)
Hydrochloric acid cannot be concentrated above 22.2% by boiling.
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.
What would happen if :
Concentrated hydrochloric acid is kept open.
Write three equations to show that hydrochloric acid acts as an acid.
Fill in the blank:
___________ agent converts hydrochloric acid to chlorine.
Name the gas evolved when an oxide and concentrated hydrochloric acid are heated.
Correct the following statement:
Hydrochloric acid is prepared in the laboratory by passing hydrogen chloride directly through water.
Aqua regia is a mixture of ______.
State one appropriate observation of the following:
Which gas is evolved when potassium sulphite with dilute hydrochloric acid.
The following question is pertaining to the laboratory preparation of hydrogen chloride gas.
State a safety precaution you would take during the preparation of hydrochloric acid.
