Iodine clock concentration

I seem to be stuck on this question on concentration:

There is
1 cm^3 of KI,
4cm^3 of water,
2cm^3 of Na2S2O3,
1cm^3 of starch solution
2cm^3 of K2S2O8
in a test tube, and I need to find out the concentration of Iodide ions. I'm not sure if there is enough information heer to answer the question or not :confused:

Any help appreciated!

Reply 1

hb1987

You need to knwo the original concentration of potassium iodide. Once you do, to find out the concentration in the test tube, multiply the original conc. by (the volume of KI you used in the tube/the total volume of solutions on the tube).

Hope this helps,
[INDENT]Harry[/INDENT]

Reply 2

oxymoron

7

hb1987

You need to knwo the original concentration of potassium iodide. Once you do, to find out the concentration in the test tube, multiply the original conc. by (the volume of KI you used in the tube/the total volume of solutions on the tube).

Hope this helps,
[INDENT]Harry[/INDENT]

Probably would have helped 4 months ago, unless this was a very extended piece of work!

Reply 3

Ramaya

OP

2

hb1987

You need to knwo the original concentration of potassium iodide. Once you do, to find out the concentration in the test tube, multiply the original conc. by (the volume of KI you used in the tube/the total volume of solutions on the tube).

Hope this helps,
[INDENT]Harry[/INDENT]

Aww bless thanks for the help tho :biggrin:

Glad I don't have to do that anymore that was boooorrrrriiinnnggg :wink:

Iodine clock concentration

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