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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: shanker on September 13, 2009, 09:16:12 AM

Title: bromide ions produced from ?
Post by: shanker on September 13, 2009, 09:16:12 AM

Bromide ions (Br -) are produced in the reaction between bromine (Br2) and a substance X. Which one of the following could X contain ?
Chlorine, Cl2
  Iodide, I - 
Chloride, Cl -
Iodine, I2
 

Title: Re: bromide ions produced from ?
Post by: Sam (NG) on September 13, 2009, 09:21:51 AM

What type of reaction is the production of Bromide from Bromine? Reduction or Oxidation?

Title: Re: bromide ions produced from ?
Post by: shanker on September 13, 2009, 09:24:05 AM

reduction which is gain of electrons so it is chlorine or iodine but i dont know which one is able to react with bromine

Title: Re: bromide ions produced from ?
Post by: shanker on September 13, 2009, 09:40:13 AM

i think it is chlorine Cl2

Title: Re: bromide ions produced from ?
Post by: Borek on September 13, 2009, 09:48:35 AM

Reactivity series are usually defined for metals, but they work for halogens as well. You just have to know in which direction.

Title: Re: bromide ions produced from ?
Post by: shanker on September 13, 2009, 09:51:54 AM

i do not understand this question.......

i now think it is Chloride, Cl - because it needs to gain electrons

on the other hand Br - ions need to be formed which means electrons could be gained from Chlorine, Cl2 ?