In the Group 7 displacement reactions, Chlorine, Bromine ...


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C6: Groups in the Periodic Table and Reactions

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Question:

In the Group 7 displacement reactions, Chlorine, Bromine and Iodine ions are in liquid form in test tubes. Chlorine, Bromine and Iodine water is added to each of the 9 test tubes we have (3 of each ion.) What observations would you make REMEMBER: More reactive = displacement Colour change = reaction

Author: Bryn Irons




Answer:
Chlorine water will displace the Bromine and Iodine ions as its more reactive, so we will see a colour change Br will turn from clear to yellow I will turn from clear to red (Cl stays same as no reaction has taken place) Bromine water is now added and the only colour change is with Iodine, as its more reactive and displaces it. This colour change will be from clear to red.


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