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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?
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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)
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.
Fill in the blank:
___________ agent converts hydrochloric acid to chlorine.
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
Aqua regia is a mixture of ______.
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:
Copper sulphate is treated with dilute hydrochloric acid.
State one appropriate observation of the following:
Action of dilute HCl or sodium sulphite.
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.
