B: We poured the ash into a beaker filled with distilled …show more content…
This will prevent any getting on your skin and causing irritation if it was to be spilt. If the iodine doesn’t go a deep brown colour from the hydrogen peroxide oxidising the iodide ions, then the experiment will have to be started again.
E: When you put the iodine into the cyclohexane it’s soluble. This means that when it is poured into the funnel it will separate away from each other. There will be two individual layers with the entire impurities forming an aqueous layer on the bottom and the organic solvent will float to the top. When you are shaking the funnel with the liquids, any gas that is formed will have to be released from it via the valve, as it could crack the funnel and ruin the experiment. When transferring all the liquid across, you must ensure that that none of the liquid is spilt and lost as this will affect the final results.
F: The liquid in this funnel was separated into two different beakers. This made it is easier for us to distinguish between the two layers that we made. The purple colour liquid is the pure iodine one. A problem that could be faced could be that one of the two separated liquids has not turned purple. This means that there was no iodine that was formed therefore the experiment would have to be started