My son is taking chemistry online and I have no idea how to do this. He has to separate 5 materials, iron, salt, saw dust, gelatin, and sand. I think I can figure out all but the gelatin and salt. Please help!!!! I am so lost!!! He also has to state the purpose for this along with the steps, and equipment used.
Thank you for any and all help!!!
2007-03-15 12:33:52 · 2 answers · asked by S Denise J 2 in Science & Mathematics ➔ Chemistry
I need to know how to separate the salt from the gelatin. Can anyone help?
2007-03-15 12:50:11 · update #1
How do I recover the gelatin?
2007-03-15 13:12:23 · update #2
Magnet for the iron,
then you'd need to put the rest into a lot of water
The sawdust will float - scoop it off the top
The sand will sink - pour the water off into another bucket (filter it to collect anything in the filter paper)
The salt and gelatin will be dissolved in the water
I think if you cook off the water you can recrystallize the salt first - let me go find out
The gelatin purification sites get rid of salt by means of ion-exchange
There is a site showing a salt crystallizer
I think you'd do it in the lab by slowly evaporating off the water and either doing a fractional crystallization or by putting a string with a knot in it and slowly cooling the solution hoping to form a salt crystal you could pull out and leave the gel behind.
2007-03-15 12:42:27 · answer #1 · answered by Orinoco 7 · 3⤊ 0⤋
Excellent Ori!
I think you could pour the liquid off, through a filter. The gelatin would pass through and the salt would collect and recrystallize?
I don't think you'd want to heat the water w/ the gelatin; it would cook
2007-03-15 13:08:29 · answer #2 · answered by Silly me 4 · 1⤊ 0⤋