CHEM 1115 Reaction of Zinc and Iodine| Solved

Name:_______________________Date:_______________Partner:________________________



Reaction of Zinc and Iodine
Safety: Waste:
Be cautious and always wear your safety ZnI2 product must be dissolved in water and
goggles!!! Spilled water must be cleaned up disposed of in the heavy metals waste
promptly to prevent slippage. The flame of container.
the Bunsen burner can cause severe burns
and can catch loose hair and clothing on Any reaction liquid disposed of (not
fire. The solutions used in this experiment evaporated to solid ZnI2) must be disposed
are dangerous and can cause damage to your of in the heavy metals waste container.
body and harm other people working around
you. Always be careful and considerate of Unreacted zinc recovered from the reaction
other people working around you. process may be collected and recovered for
use in other labs.
Zinc metal (Zn) is a serious hazard to
aquatic wildlife and should never be
disposed of down the drain. Zinc dust can Materials:
be a respiratory hazard.
test tube
Elemental iodine (I2) is toxic if ingested, zinc metal
inhaled, or left on the surface of the skin. It iodine
is a skin and eye irritant. deionized water
0.1 M acetic acid
Acetic acid, 0.1 M can cause serious eye ignition tube
and skin irritation. spring clamp
Pasteur pipet
Zinc iodide (ZnI2) can cause serious eye Bunsen burner
and skin irritation, may cause cancer, and is
a serious hazard to aquatic wildlife.




Reaction of Zinc and Iodide Procedure v.1.1 updated 5/3/24 by Mary Alvarez
This study source was downloaded by 100000820853758 from CourseHero.com on 11-21-2025 07:05:33 GMT -06:00
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https://www.coursehero.com/file/248781907/Reaction-of-Zinc-and-Iodine-Joseph-Dyepdf/

, Name:_______________________Date:_______________Partner:________________________


Procedure:
Part I. Reaction of Zinc with Iodine

Procedure Observations, Measurements, & Calculations

1. Weigh approximately 0.50 g of zinc metal
on the top loading scale and place it in a test Mass of test tube:_________
tube. Record the mass of zinc used.

2. Weigh approximately 0.50 g of iodine on Mass of Zn(s):_________
the top loading scale and place it in the same
test tube with the zinc metal. Smaller pieces
of iodine are preferred because they will Mass of I2(s):_________
dissolve in the water faster. Record the mass
of the iodine used.

3. Measure approximately 1.3 mL of deionized Total mass of reactants used: __________
water and place it in the test tube with the
zinc and iodine. Then, add 3 drops of 0.1 M
acetic acid to the tube and mix it well. Do
not add the acetic acid to the test tube
before the water because toxic iodine gas
may evolve. As the iodine begins to
dissolve, the solution will turn brown.

4. Swirl or gently shake the contents of the test
tube until the solution becomes clear and
colorless. This will take approximately 3 to
5 min.

Record all observations and include photos
of your reaction test tube before and after
swirling.




5. Calculate the theoretical yield of ZnI2 based
on your measured reactants.




Theoretical Yield of ZnI2(s):_________


Reaction of Zinc and Iodide Procedure v.1.1 updated 5/3/24 by Mary Alvarez
This study source was downloaded by 100000820853758 from CourseHero.com on 11-21-2025 07:05:33 GMT -06:00
2

https://www.coursehero.com/file/248781907/Reaction-of-Zinc-and-Iodine-Joseph-Dyepdf/