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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.
\[\ce{Na2S2O3 + 2HCl -> 2NaCl + H2O + SO2 + S ↓}\]
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?
Write three equations to show that hydrochloric acid acts as an acid.
Give two tests for hydrochloric acid.
Fill in the blank:
A constant boiling mixture of water and hydrochloric acid is also called as _______________.
Fill in the blank:
Hydrogen and chlorine reacts in presence of ___________ to form hydrogen chloride.
Write equation for the reaction between hydrochloric acid of the following: Oxide of lead
Why is hydrogen chloride not collected over water?
Correct the following statement:
Hydrochloric acid is prepared in the laboratory by passing hydrogen chloride directly through water.
In the laboratory preparation of hydrochloric acid, HCl gas is dissolved in water.
- Draw a diagram to show the arrangement used for the absorption of HCl gas in water.
- State why such an arrangement is necessary? Give two reasons for the same.
- Write the chemical equation for the laboratory preparation of HCl gas when the reaction is:
- Below 200°C
- Above 200°C
State one appropriate observation of the following:
Concentrated HCl is made to react with mangesediaoxide
