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प्रश्न
How will you prepare hydrochloric acid in laboratory?
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उत्तर
Hydrochloric acid cannot be prepared by mixing hydrochloric acid gas directly in water, as it leads to back suction. A complete set-up of apparatus for the preparation of hydrochloric acid in the laboratory is shown in the given figure.
Hydrogen chloride gas prepared by the reaction of sodium chloride and sulphuric acid is passed to an inverted funnel arrangement through an empty flask. 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 in the beaker. HCl gas enters through the delivery tube, fills the mouth of the funnel, and then dissolves in water. In this way, we get hydrochloric acid in the beaker.
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संबंधित प्रश्न
Explain, why (or give reasons for)
Only a very dilute solution of hydrogen chloride in water can be concentrated by boiling the solution while a very concentrated solution would become less concentrated when boiled.
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.
Write the uses of hydrochIoric acid.
Fill in the blank:
___________ agent converts hydrochloric acid to chlorine.
Write balanced equation for the following reaction:
Red lead (trilead tetroxide) is warmed with concentrated hydrochloric acid.
State one reason why tap water is not used to prepare a solution of silver nitrate in the laboratory.
Write a balanced equation for the reaction of zinc and dilute hydrochloric acid.
State one appropriate observation of the following:
Which gas is evolved when potassium sulphite with dilute hydrochloric acid.
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.
