Chemistry
The given set up in the figure is for the preparation of an acid
(a) Name the acid prepared by this method.
(b) Name the reactants used.
(c) Why an empty flask is used?
(d) What is the drying agent used? Why is this drying agent chosen
(e) What is the role of inverted funnel in the arrangement?
Hydrogen Chloride
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Answer
(a) Hydrochloric acid (HCl)
(b) The reactants used are sodium chloride and sulphuric acid.
(c) The empty flask acts as an Anti-Suction device. If back suction takes place then the water gets collected in it and will not reach the generating flask.
(d) The drying agent used is Concentrated Sulphuric acid. It is chosen as drying agent because it does not react with HCl.
(e) The role of the inverted funnel in the arrangement is -
- It prevents or minimizes back suction of water.
- It provides a large surface area for absorption of HCl gas.
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