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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 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 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 of it, water level rises in funnel and level of water in the beaker is lowered. Thus, the rim of the funnel loses contact with water and the outside air rushes in through the gap to equalize the pressure on either side of the funnel. The solution falls back into the beaker due to force of 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.
The aim of the Fountain experiment is to prove that ______.
How can you prove that hydrochloric acid contain :
Chlorine?
How will you show that hychloric acid contains both hydrogen and chlorine (other than by electrolysis) ?
Give reason for the following:
Dilute hydrochloric acid cannot be concentrated by distilling (boiling) the dilute acid.
Hydrogen chloride dissolves in water to form an acidic solution.
Name the experiment which demonstrates that hydrogen chloride is very soluble in water.
The diagram shows an apparatus for the laboratory preparation of hydrogen chloride.
(i) Identify A and B
(ii) Write the equation for the reaction
(iii) How would you check whether or not the gas jar is filled with hydrogen chloride?
(iv) What does the method of collection tell you about the density of hydrogen chloride.
What property of hydrogen chloride is demonstrated when it is collected by downward delivery (Upward displacement)?
State the following:
The drying agent used in the laboratory preparation of HCl gas.
Identify the terms for the following:
A method used to collect HCl gas.
