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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?
उत्तर
Hydrochloric acid cannot be prepared by mixing hydrochloride gas directly in water as it Ieads to back suctions.
A complete set up of apparatus for the preparation of hydrochloric acid in laboratory is shown in the given figure.
Hydrogen chloride gas prepared by the reaction of sodium chloride and sulphuric acid, is passed to inverted funnel arrangement through empty flask. An inverted funnel connected to the HCI gas supply is placed in a beaker in such a way that the rim of the funnel just touches the surface of water in the beaker. HCI gas coming through delivery tube fills the mouth of the funnel and then dissolves in water. By this way we get hydrochloric acid in the beaker.
OR
Hydrogen chloride gas is dissolved in water by inverted funnel arrangement. HCI gas cannot be dissolved in water directly as it Iead to back suction.
The purpose of funnel while preparing hydrochloric acid from HCI gas is :
1. To prevent back suction of water.
2. It provides a larger surface for dissolution of hydrogen chloride gas.
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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)
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.
What would happen if
Hydrogen chloride prepared in laboratory, is passed through water, using a delivery tube.
Write three equations to show that hydrochloric acid acts as an acid.
Give two tests for hydrochloric acid.
Write the uses of hydrochIoric acid.
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: Bleaching powder
In the laboratory preparation of hydrochloric acid, \[\ce{HCl}\] gas is dissolved in water.
- Draw a diagram to show the arrangement used for the absorption of \[\ce{HCl}\] 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 \[\ce{HCl}\] gas when the reactants are:
- Below 200°C
- Above 200°C
