I am having trouble finding the rest of the data for my precipitation Lab for percent yield of cobalt phosphate. The data I collected has already been imputed but cannot find the rest of the data. I need to use the given data I collected to find the other blank boxes in excel.
I am having trouble finding the rest of the data for my precipitation Lab for percent yield of cobalt phosphate. The data I collected has already been imputed but cannot find the rest of the data. I need to use the given data I collected to find the other blank boxes in excel.
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I am having trouble finding the rest of the data for my precipitation Lab for percent yield of cobalt phosphate. The data I collected has already been imputed but cannot find the rest of the data. I need to use the given data I collected to find the other blank boxes in excel.
Transcribed Image Text:A. Calculate the mass of dried precipitate.
B. Calculate the moles of Na3PO4 used:
volume of NazPO4, mL
|moles Na3PO4 = (molarity of Na3PO4, mole/L )×
1000
C. Calculate the moles of Co(NO3)2 used:
volume of Co(NO3)2, mL
moles Co(NO3)2 = (molarity of Co(NO;)2, mole/L)×|
1000
D. Using the balanced chemical equation, convert the moles of Na3PO4 to moles of
Precipitation Reactions – Background
В-2
precipitate:
stoich.coeff. precipitate
stoich.coeff. Na3PO4
moles Na3PO4 x
moles of precipitate
E. Using the balanced chemical equation, convert the moles of Co(NO3)2 to moles of
precipitate:
stoich.coeff. precip itate
moles Co(NO3)2 ×
= moles of precipitate
stoich.coeff. Co(NO3)2
F. What is the limiting reagent and what is the theoretical yield (moles) of precipitate?
G. Calculate the molar mass of the precipitate:
Note: The precipitate formed in this experiment is actually a hydrate!
precipitate • X H2O
Do some literature research to determine the most common hydrate of the
precipitate, and then, based upon your answer, calculate the correct molar mass of
your precipitate.
H. Convert the theoretical yield (moles) of precipitate to grams:
thoretical yield (g) = theoretical yield (moles) × (molar mass of precipitate • X H20, g/mole)|
I. Calculate the percent yield of the reaction:
step A
|% yield=:
x 100
step H
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Set 4
Solution3 Solution4 Solution9
3
Mass of dish & Paper(g)
5895.32
5843.1
5857.02
Mass dish, paper, product(g)
Mass of dried product
4
5895.7
5843.7
5857.66
5
0.24
6
Molarity of Na3PO4
0.6
7
Molarity of Co(NO3)2
11.3
8
mL of Na3PO4
10
10
10
9
moles of Na3PO4
10
mL of Co(NO3)2
4
6.
12|
11
moles of Co(NO3)2
12
Theoretical yield if Na3PO4
13
Theoretical yield if Co(No3)2
14
Limiting Reagent
15
MolMass of product.hydrate
16
Theoretical Yield in grams
17
18
Percent Yield
19
Predicted color of filtrate
20
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Sheet1
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