Experiment 6 A. Identification of True Hydrates Determining the Formula of an Unknown Hydrate Compound Color of solution before heating Water droplets after heating (Yes/No) Color of the Color of solution True hydrate residue after adding (Yes/No) after water to the heating residue Nickle(II) chloride wean force yes Sucrose shte es Grange Pale Green Yes Dok Byes Cobalt(II) chloride Pole yes Bue Potassium chloride de No kshite white Yes NG B. Determine the Formula of an Unknown Hydrate Unknown sample number. Molecular formula of the unknown: 1. Mass of crucible + unknown hydrate 2. Mass of crucible 3. Mass of unknown hydrate(1-2) 4. Mass of crucible + anhydrous salt a. after first heating b. after second heating 5. Mass of unknown anhydrous salt (4b-2) 6. Mass of water lost (1-4b) #11 NISO 24 104389 23.0559 0.9889 23.6429 23.62 0.5879 04019 Calculations: 1. Calculate the formula mass/molar mass of the anhydrous salt of your unknown sample (show calculations). 2. Calculate the number of moles of the anhydrous salt (show calculations). 3. Calculate the number of moles of water in the unknown hydrate (molars mass of H₂O 18.02 g/mol). Show calculations. 4. Determine X: show calculation step x= 5. Molecular formula of your unknown hydrate:.
Experiment 6 A. Identification of True Hydrates Determining the Formula of an Unknown Hydrate Compound Color of solution before heating Water droplets after heating (Yes/No) Color of the Color of solution True hydrate residue after adding (Yes/No) after water to the heating residue Nickle(II) chloride wean force yes Sucrose shte es Grange Pale Green Yes Dok Byes Cobalt(II) chloride Pole yes Bue Potassium chloride de No kshite white Yes NG B. Determine the Formula of an Unknown Hydrate Unknown sample number. Molecular formula of the unknown: 1. Mass of crucible + unknown hydrate 2. Mass of crucible 3. Mass of unknown hydrate(1-2) 4. Mass of crucible + anhydrous salt a. after first heating b. after second heating 5. Mass of unknown anhydrous salt (4b-2) 6. Mass of water lost (1-4b) #11 NISO 24 104389 23.0559 0.9889 23.6429 23.62 0.5879 04019 Calculations: 1. Calculate the formula mass/molar mass of the anhydrous salt of your unknown sample (show calculations). 2. Calculate the number of moles of the anhydrous salt (show calculations). 3. Calculate the number of moles of water in the unknown hydrate (molars mass of H₂O 18.02 g/mol). Show calculations. 4. Determine X: show calculation step x= 5. Molecular formula of your unknown hydrate:.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:Experiment 6
A. Identification of True Hydrates
Determining the Formula of an Unknown Hydrate
Compound
Color of
solution
before
heating
Water
droplets
after
heating
(Yes/No)
Color
of the
Color of
solution
True
hydrate
residue
after adding
(Yes/No)
after
water to the
heating residue
Nickle(II) chloride
wean force yes
Sucrose
shte
es
Grange Pale Green Yes
Dok Byes
Cobalt(II) chloride Pole
yes
Bue
Potassium chloride de
No
kshite white
Yes
NG
B. Determine the Formula of an Unknown Hydrate
Unknown sample number.
Molecular formula of the unknown:
1. Mass of crucible + unknown hydrate
2. Mass of crucible
3. Mass of unknown hydrate(1-2)
4. Mass of crucible + anhydrous salt
a. after first heating
b. after second heating
5. Mass of unknown anhydrous salt (4b-2)
6. Mass of water lost (1-4b)
#11
NISO
24
104389
23.0559
0.9889
23.6429
23.62
0.5879
04019
Calculations:
1. Calculate the formula mass/molar mass of the anhydrous salt of your unknown sample
(show calculations).
2. Calculate the number of moles of the anhydrous salt (show calculations).
3. Calculate the number of moles of water in the unknown hydrate (molars mass of H₂O
18.02 g/mol). Show calculations.
4. Determine X: show calculation step
x=
5. Molecular formula of your unknown hydrate:.
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