REDOX TITRATION QUESTION HELP!! ChemistryWatch
IO3-(aq) + 6H+(aq) + 5I-(aq) → 3I2(aq) + 3H2O(l)
The liberated iodine was then titrated against sodium thiosulfate, using starch indicator. The redox ionic equation for the reaction taking place in the titration is:
2S2O32-(aq) + I2(aq) → 2I-(aq) + S4O62-(aq)
The liberated iodine just reacted with 22.60cm3 of aqueous sodium thiosulfate
a) Calculate the concentration of the potassium iodate(V) solution, in moldm-3.
I got 2.8 x10^-3 moldm^-3
b) Calculate the concentration of the aqueous sodium thiosulfate, in moldm-3.
I got 6.20X10^-3 moldm^-3
Is part b correct???
Thank you in advance!