llbm Qualitative Lab

The investigation revolved around the llbm reaction of Fe/SCN and FeSCN and shifting the llbm position of the reaction to either the reactant and/or product side

the reaction:
Fe3+  +  SCN-     <=>     FeSCN2+
clear/colourless            reddish-brown

the addition of the KSCN (added SCN-) pushed the llbm to the FeSCN side
thus using up the added SCN ion
- evidence of llbm shift: solution became darker

the addition of the Fe(NO3)3 (added Fe3+) pushed the llbm to the FeSCN side
thus using up the added Fe3+ ion
 - evidence of llbm shift: solution became darker

the addition of the Na2HPO4 pushed the llbm to the Fe 3+ /SCN- side
 - evidence of llbm shift: soution became colourless
-the HPO4 binds to the Fe3+ removing it from solution, the FeSCN then breaks down as the reaction shifts back to the reactant side trying to replace the lost Fe3+

A couple of small* jokes to end this post. Why did the scientist install a knocker on the door? [Ans: In order to win the No-Bell prize.] Why did the atoms cross the road? [Ans: It was time to split.] *Small jokes - font size. :<)