You can do this experiment at home with MEL Chemistry:
https://melscience.com/en/experiments/iodine-in-plastic/
Reaction:
Na2S2O5 + H2O + I2 → NaHSO4 + HI
Step-by-step instruction
1. Fill a cylindrical vial with iodine from the iodine bottle, located in the set.
2. Close the cylindrical vial with a cap. Wait one day.
3. Remove the cap from the cylindrical vial.
4. Drip 10-20 drops of disodium disulfite (Na2S2O5) into the dirty vial.
5. Pour the solution out of the vial into a disposable cup or into the sink.
6. Observe the results: the vial remains yellow, despite the action of a reducing agent.
Amazing chemistry experiments to do with your family: https://melscience.com/en/
How it works
1. Simply enter your address and payment information and you are in. You can cancel your subscription at any moment.
2. After you subscribe, you will receive the Starter Kit, which includes the main equipment and the first two experiment sets.
3. Each month, you will receive two sets with amazing experiments!
4. You can open a new set twice a month. Performing these experiments with your family will become the best part of your weekend!
True science, with educational value
• You could spend just 60 minutes twice a month enjoying science with your child. However, your child could also choose to spend much more time using our app and website to study more interesting science facts.
• The graphic instructions are so detailed that your children will be able to do the experiments easily.
• All experiments are performed using practical single-use lab ware.
• The reactions have been verified. All of the experiments will work.
• Sets comply to European regulation EN 71-4 on safety of experiments sets.
• Every experiment set has been tested by schoolchildren aged 12+.
• We will not send you any experiments that involve explosives.
Want to determine what educational benefits your children are receiving from doing our experiments? You can assess your child’s learning progress using our regular quizzes.
Post time: Apr-05-2017