High School Biology-Chemistry SMILE Meeting
12 October 1999
Notes taken by Pat Riley [Lincoln Park HS]
[Porter Johnson, IIT: redacteur]
John Scavo [Richards Voc HS]
Ken Schug [IIT Professor of Chemistry]
- He had 2 solutions that he poured into separate glasses and then
mixed them together. The clear liquids turned a red color.
- He then divided a the mixture into 3 parts and put some of the
original solutions into separate glasses. They got darker.
A + B ---> C (red)
C + A ---> C
C + B ---> C
Since the colors got darker this showed that there were all three
compounds in each solution. So the equation would be
A + B <===> C (equilibrium).
The specific reaction was
Fe+++ + SCN- <===> FeSCN+++