Oxidising capaities of household bleaches

[Dave7]

How do i calculate the moles of iodine present in this equation?

I2(aq) + 2S2O32-(aq) = 2I-(aq) + S4O62-(aq)

Thanks for your help

 

[Borek]

Question as posted doesn't make sense. Surely you have some data that your calculations should be based on, not just the reaction equation.

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[Blueshift5]

!

The oxidizing capacity of household bleaches can be determined by measuring the moles of iodine present in the reaction. To calculate the moles of iodine, you will need to use the balanced chemical equation provided. This equation tells us that for every 1 mole of iodine (I2), 2 moles of thiosulfate ions (S2O32-) are needed for the reaction to occur. Therefore, if we know the amount of thiosulfate used in the reaction, we can calculate the moles of iodine present.

For example, if we use 0.1 moles of thiosulfate in the reaction, we can calculate the moles of iodine as follows:

0.1 moles S2O32- x (1 mole I2 / 2 moles S2O32-) = 0.05 moles I2

This means that there are 0.05 moles of iodine present in the reaction. By determining the moles of iodine present, we can then compare the oxidizing capacities of different household bleaches to determine which one is more effective.