Iodine Thiosulphate Titration(Complete) Flashcards
1
Q
What indicator is used in this titration?
Iodine Thiosulphate Titration
A
Starch indicator.
2
Q
Why are iodide ions used?
A
To help the iodine dissolve.
3
Q
What is the standard solution in this titration?
Iodine Thiosulphate Titration
A
Iodine solution.
4
Q
When is the indicator added and why?
A
When the solution is straw coloured. or it will complex with iodine and ruin the result.
5
Q
Pure iodine is almost completely insoluble in water, what must be added to bring iodine into aqueous solution?
A
Iodide ions.
6
Q
What sequence of colours was observed in the conical flask from the start of the titration until the end point was reached?
A
Brown- straw coloured- blue- colourless.
