Group 7: Halogens

Read our general notes on Risk Assessment

Hydrogen halides: audio tutorial

How to make them in the laboratory

Brian Orger discusses the making of hydrogen halides in the laboratory.
 
Listening will help you to understand the reactions of halide salts with concentrated sulphuric acid. These are tricky changes involving redox as well as acid-base reactions, so listen carefully.
 
Note you should not prepare these compounds in practice without consulting your teacher, and performing a risk assessment.
 
Please tell us what you think of this tutorial. Did it help you to understand the concepts? What other subjects would you like to us cover? Click on 'react' below and submit your comment.
 
>>> Download the audio file on the right.

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Reactions

chemist
Wow! That was very clear and interesting as I have not yet covered this topic at school but was interested in it anyway. Thank you! And please can you make some more of these?
13 January 2008

Reaction
A very usefull tutorial, clear, laconic and even encouraged 'audience participation' (or at least a little bit of thought). More from you please sir!
30 December 2007

feedback
Really well explained, nice and concise. As above a video or even powerpoint presentation would be a useful visual aid.
05 January 2007

shalu
This audio tutorial was really good, but it would have been excellent if there was a video demonstration to go with it.
07 February 2006

Suggestion
It would be better if a video was also shown at the same time, so that students can visualise the topics being discussed more easily
09 May 2005

updated: 11 December 2003