Advertisements
Advertisements
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?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Describe an experiment to prove the following:
HCI is highly soluble in water.
How can you prove that hydrochloric acid contain :
Hydrogen
Fill in the blank:
Aqua-regia is a mixture of ___________ .
Fill in the blank:
___________ agent converts hydrochloric acid to chlorine.
Name the gas evolved when an oxide and concentrated hydrochloric acid are heated.
Write equation for the reaction between hydrochloric acid of the following: Manganese dioxide
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
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.
State your observation when dilute hydrochloric acid is added to sodium thiosulphate.
