O Level Chemistry: Redox Reaction Question 7

Written on February 5, 2008 by sean in Chemistry Notes & Tips

One last question (from Jennifer) for us to discuss on:

7. Why does Chlorine act as an Oxidising agent on potassium bromide?

A free response question for you to express your answers.

4 Responses to O Level Chemistry: Redox Reaction Question 7

june
February 9, 2008 | 11:27 pm

hello. here to leave a tag. haha. anw chlorine acts as a oxidsing agent is because it
is more reactive than bromine. thus it will displace bromide ions, causing bromide
ions to lose electrons, thus being oxidise.

Reply
Eric
February 13, 2008 | 2:05 pm

Hey. I agree with Junel’s answer. Chlorine being more reactive, will act as
oxidizing agent to oxidize the Br- bromide ions to Br2 Bromine Gas. Oxidation
state of Br change from -1 to 0.

Good question posted. Thanks for sharing

Reply
sean
February 14, 2008 | 9:48 am

Hi June and Eric,

Good to see both of you posting your suggested answers.

The answers both provided are absolutely correct. Chlorine is indeed more
reactive than Bromine (based on reactivity series of the periodic table Group 7
Halogens Chemical Properties). Thus, Chlorine gas will act as the oxidizing agent
and displace the Bromide Br- ions to become Bromine Gas. Oxidation state of
Bromine increase from -1 to 0.

Cheers
Sean

Reply
SimpleChemConcepts | O Level Chemistry - Oxidizing & Reducing Agents
February 26, 2010 | 12:31 am

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