Hi there! I'm new here and I was wondering if anyone can help me.
I am investigating the kinetics of the reaction of iodide and persulphate ions but I am really struggling to work out teh concentrations and volumes I need. My teacher says that as I am changing the concentration of the KI, the Peroxidisulphate needs to be at least 10 times in excess. But how do I work this out. I ahev had one failed attempt so far when I worked out that I would need 4cm of 0.01M KI, 2cm 0f 0.1M s2O8 and 1 cm of 0.1M Thiosulphate and 1cm of Starch. This reaction did not work at all and still probably hasn't changed colour form clear to Blue.
So how can I work it out? Thanks in advance!
Thanks for posting! You just need to create an account in order to submit the post
Already a member?
Oops, something wasn't right
please check the following:
Not got an account?
Sign up now
© Copyright The Student Room 2016 all rights reserved
The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.
Register Number: 04666380 (England and Wales), VAT No. 806 8067 22
Registered Office: International House, Queens Road, Brighton, BN1 3XE