Describe the laboratorymethod for the preparation of Chlorine gas with a balanced chemical equation & draw labeled diagram also. | web4study

Describe the laboratorymethod for the preparation of Chlorine gas with a balanced chemical equation & draw labeled diagram also.



PREPARATION OF CHLORINE: 

LABORATORY METHOD

Chlorine is usually prepared in the laboratory from hydrochloric acid, which is a convenient source of chlorine. When concentrated hydrochloric acid is gently heated with the oxidizing agent, such as Mn02′ KMnO, or KCI03, chlorine gas is produced. 

REACTION:

(i) Mn02 + 4HCl –>HEAT—> MnCl2(aq) + 2H20(i) + Cl2(g)

In this method Mn02′ is taken in a round bottom flask, as shown in the figure fitted with a cork, containing a delivery tube. Concentrated hydrochloric acid is added in the flask over Mn02. On gentle heating greenish yellow chlorine gas comes

PREPARATION OF CHLORINE

out which is collected by the upward displacement of air in a gas jar through the delivery tube. Since it is a poisonous gas so efficient ventilation in the laboratory is necessary.

 


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