A: The purpose of heating the seaweed was so that it turned into ash. We did this by placing the seaweed in a tin and burning it from the Bunsen burner. This was done so we could get iodine from the seaweed to use in the experiment. This produces the iodine we need to begin the experiment. A problem that could have occurred was placing too much seaweed in the tin so it took a lot longer to burn. Also, a bit of the seaweed were popping out the tin which is a health and safety concern so we must remove all of the circular pieces of seaweed and keep the amount in the tin at one time to the minimum. For this. Safety goggles and a lab jacket was worn to prevent getting hit by any of the pieces.
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
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