Chemical Forums

Chemistry Forums for Students => High School Chemistry Forum => Topic started by: berru on February 06, 2016, 10:46:36 PM

Title: Is this safe to react?
Post by: berru on February 06, 2016, 10:46:36 PM

Hi, I want to do a kinetics experiment involving the equation
 5Br- (aq) +BrO3- (Aq)+ 6H+(aq)-----------------→ 3Br2 (aq)+3H2O (l)

The materials they use in the lab are potassium bromate (v), potassium bromide, and sulphuric acid (for the H+ ions). Phenol orange is added to the solution and you measure the time it takes for the solution to turn colourless.

I have the sulphuric acid but problem is that my school doesnt have the others so I plan to react it with sodium bromate (v) and sodium bromide.

Will it still work regardless and is it safe? My teaches have been stressing to me about the last part and I really want to do this experiment. It should theoretically work since the sodium/potassium are spectator ions but I'm concerned about the dangers as well associated with the experiment. I tried searching up online but couldn't find anything so help would be greatly appreciated thanks!

Title: Re: Is this safe to react?
Post by: aga on February 07, 2016, 03:57:56 PM

Bromine is one of those elements that you should avoid messing with if you're unsure of the outcome.

Is there a link/writeup of the Full procedure you intend to follow ?