How To Lab Report 2.00g Of Acetic Acid Of Iodine Crystals
The objective of this lab was to. First, we measured out 2.00g of granular zinc and 2.03g
of iodine crystals and added them together into a boiling tube, which we labeled "R". After, we
added a boiling chip into a large test tube labeled "P" and we also labeled an empty regular sized
test tube with a "C". When we added 5mL of acetic acid to tube R, the solution turned red and
was hot. After we add 30 drops of the red solution into tube C and continued to swirl tube R, the
solution became clear and there was some grey solids in the tube as well. We poured the solution
in tube R, leaving the grey solids behind, into tube P, which has the boiling chip, and the solution
turned from clear to a light yellow. After "washing" the grey …show more content…
When the grey solids were completely dried, we put it aside and started heating tube P, which
contained the yellow solution and boiling chip. After heating the tube, the liquid turned into
some powdery and white substance, which we had to cork and store in a Ziploc bag with
desiccant in order to keep it completely dry.
Later the dried substance along with a colored solution , the grey solid leftover, white
product in H2O, standard zinc metal, standard iodine solid, standard zinc Iodide dissolved in
water and standard zinc ion- Iodide ion- Iodine- Triiodide ion in H2O were tested for Iodine(I2),
Iodide, Triiodide, Zinc ion(Zn 2+) and Zinc metal. Then we dissolved some of the white
substance with deionized water and made an electrolysis apparatus with a 9.38V battery. We
then dried the rest of the white substance and identified the substances.
DESCRIPTION OF SUBSTANCE
The first thing we observed were the boiling chips The first thing we observed were the
boileezers/ boiling chips, which are small, dark grey, and the boiling chips looks like small
pieces of rocks. The desiccant has a pale grey color, and it smells a little bit like paint. …show more content…
Since Iodide and Iodine was present, that means that the solution was
triiodide because I- + I2→ I3- the solution were red, which means it passed the triiodide test as
well. To make sure that it was zinc that formed on the cathode end of the tip, we tested for zinc
ion (Zn) by cutting the cathode wire tip and putting it in a test tube and adding HCl to it and it
started to fizz, which means that Zn was present. We also tested for zinc metal (Zn2+) by adding
the cathode wire tip, deionized water, and a magnesium turning into a test tube and check to see
if black solids would form around the magnesium turning, which did happen and which means
that zinc metal was present as well.We first added some white solids to a large test tube and
reheated it to make sure that no liquid were present. Then, we put the cold finger inside of the
large test tube and heated the large test tube with the cold finger. At first, some purple gas formed inside the large test tube and then some reddish brown liquid formed inside the cold
finger and a drop of the liquid formed outside the small test tube with the cold finger. We
of iodine crystals and added them together into a boiling tube, which we labeled "R". After, we
added a boiling chip into a large test tube labeled "P" and we also labeled an empty regular sized
test tube with a "C". When we added 5mL of acetic acid to tube R, the solution turned red and
was hot. After we add 30 drops of the red solution into tube C and continued to swirl tube R, the
solution became clear and there was some grey solids in the tube as well. We poured the solution
in tube R, leaving the grey solids behind, into tube P, which has the boiling chip, and the solution
turned from clear to a light yellow. After "washing" the grey …show more content…
When the grey solids were completely dried, we put it aside and started heating tube P, which
contained the yellow solution and boiling chip. After heating the tube, the liquid turned into
some powdery and white substance, which we had to cork and store in a Ziploc bag with
desiccant in order to keep it completely dry.
Later the dried substance along with a colored solution , the grey solid leftover, white
product in H2O, standard zinc metal, standard iodine solid, standard zinc Iodide dissolved in
water and standard zinc ion- Iodide ion- Iodine- Triiodide ion in H2O were tested for Iodine(I2),
Iodide, Triiodide, Zinc ion(Zn 2+) and Zinc metal. Then we dissolved some of the white
substance with deionized water and made an electrolysis apparatus with a 9.38V battery. We
then dried the rest of the white substance and identified the substances.
DESCRIPTION OF SUBSTANCE
The first thing we observed were the boiling chips The first thing we observed were the
boileezers/ boiling chips, which are small, dark grey, and the boiling chips looks like small
pieces of rocks. The desiccant has a pale grey color, and it smells a little bit like paint. …show more content…
Since Iodide and Iodine was present, that means that the solution was
triiodide because I- + I2→ I3- the solution were red, which means it passed the triiodide test as
well. To make sure that it was zinc that formed on the cathode end of the tip, we tested for zinc
ion (Zn) by cutting the cathode wire tip and putting it in a test tube and adding HCl to it and it
started to fizz, which means that Zn was present. We also tested for zinc metal (Zn2+) by adding
the cathode wire tip, deionized water, and a magnesium turning into a test tube and check to see
if black solids would form around the magnesium turning, which did happen and which means
that zinc metal was present as well.We first added some white solids to a large test tube and
reheated it to make sure that no liquid were present. Then, we put the cold finger inside of the
large test tube and heated the large test tube with the cold finger. At first, some purple gas formed inside the large test tube and then some reddish brown liquid formed inside the cold
finger and a drop of the liquid formed outside the small test tube with the cold finger. We