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प्रश्न
Hydrogen chloride gas is very soluble in water. It is dissolved in water to prepare hydrochloric acid by using an anti-suction device, as shown in the diagram. Very briefly explain, how this device prevents the suction of water into the flask, in which hydrogen chloride gas is produced.
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उत्तर
An inverted funnel connected to the HCl gas supply is placed in a beaker so that the rim of the funnel just touches the surface of the water. HCl gas enters through the delivery tube, fills the mouth of the funnel, and then dissolves in water. Hence, a low pressure is created, and back suction occurs. As a result, the water level rises in the funnel, and the water level in the beaker drops. Thus, the rim of the funnel loses contact with water and the outside air rushes in through the gap to equalise the pressure on either side of the funnel. The solution falls back into the beaker due to gravity. The water level then falls, and the funnel drops back to its original position.
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संबंधित प्रश्न
When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky.
When NH4OH solution is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess NH4OH solution.
How is the gas collected and why?
How can you prove that hydrochloric acid contain :
Chlorine?
Choose the correct answer from the options given below: HCl gas can be prepared by direct combination of hydrogen and chlorine gas in presence of
Give reason for the following:
Dilute hydrochloric acid cannot be concentrated by distilling (boiling) the dilute acid.
Dilute hydrochloric acid is added in turn to a mixture of iron and sulphur and to the compound formed between iron and sulphur. Name the gas formed in each case.
The aim of the fountain experiment is to prove that
- Name the experiment illustrated below.
- State the colour of the water that has entered the round-bottomed flask.
What property of hydrogen chloride is demonstrated when it is collected by downward delivery (Upward displacement)?
Identify the terms for the following:
A method used to collect HCl gas.
