Replacement Reactions of Halogens

 

Hazards: 

Methlene chloride is toxic.

Chlorine water and bromine water are corrosive and toxic.

Chemicals and Solutions: 

0.1M KCl

0.1M KBr

0.1M KI

Chlorine water

Bromine water

Iodine water

Methylene chloride

Materials: 

Three ringstands

Six 250 mL separatory funnels with stoppers

Six rings

Procedure: 

Perform the following reactions in the separatory funnels, and extract each reaction mixture with methylene chloride in order to see the characteristic color of the halogen.

Cl2(g) + 2Br-(aq) è Br2(g)+ 2Cl-

Cl2(g) +2I-(aq) è I2(g) + 2Cl-

Br2(g) +2I-(aq) è I2(g) + 2Br-

Br2(g) +2Cl-(aq) è no reaction

I2(g) +2Br-(aq) è no reaction

I2(g) +2Cl-(aq) è no reaction

To schedule a demonstration, please send an email to the demonstration lab.

 

Contact:

Eric Camp

Lecture Demonstration Technician

Bagley Hall 171

(206) 543-1606

ericcamp@uw.edu

 

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