Essay About Silicon Tetrafluoride And Standard Enthalpy Of Reaction

The Silicon Tetrafluoride – Lab Report – felixdelgado
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The Silicon Tetrafluoride
The silicon tetrafluoride (STF) reacts with 25% caustic solution to form sodium fluoride, sodium silicate and water (see reaction below).
SiF4 + 6NaOH = 4NaF + Na2SiO3 + 3H2O
Assuming 200 pounds of STF are left per tube at a temperature of 298 K and 1 atm.
Table 1. Silicon tetrafluoride
STF left per tube
90702.9
871.48
The current cleaning method uses the following mixture that is refreshed a total of 3 times per trailer.
1000 gallons of water
220 gallons of 25% caustic
AIMM is projecting 2000 gallons of water for their cleaning process (400 gallons per tube).
Table 2. Amount of water per tube
Current
Proposed
600 gal
400 gal
2271.0 L
1514.0 L
2271000 kg
1514000 kg
Table 3. Water Properties
Water Properties @ 25°C
Density
1000 kg/L
Heat Capacity, Cp
4.19 kJ/kg*°C
Table 3. Caustic solution
25% Caustic
M.W. = 40 g/mol
132.00
499.62
1064.19
1064190.60
6651.67
For this analysis the standard enthalpy of reaction was used to calculate the amount of heat produced by this reaction. The enthalpy of reaction is the change that occurs in a system when one mole of matter is transformed by a chemical reaction under standard conditions.

∆H_reaction=∑▒〖nH_products-∑▒〖mH〗_reactants 〗
Table 4. Enthalpy of formation and molecular weight
Enthalpy of Formation
Molecular Weight
-1615
kJ/mol
104.08
g/mol
-469.15
kJ/mol
40.00
g/mol
kJ/mol
41.99
g/mol
Na2SiO3
-1561.43
kJ/mol
122.06
g/mol
-285.83
kJ/mol
18.01
g/mol
∑▒〖nH_(Products )=〗-4694.92 kJ/(mol SiF_4
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“The Silicon Tetrafluoride” EssaysForStudent.com. 10 2017. 2017. 10 2017 < "The Silicon Tetrafluoride." EssaysForStudent.com. EssaysForStudent.com, 10 2017. Web. 10 2017. < "The Silicon Tetrafluoride." EssaysForStudent.com. 10, 2017. Accessed 10, 2017. Essay Preview By: felixdelgado Submitted: October 18, 2017 Essay Length: 425 Words / 2 Pages Paper type: Lab Report Views: 297 Report this essay Tweet Related Essays Hebei Silicon Valley Chemical Co. Ltd Hebei Silicon Valley chemical Co., Ltd is situated to ounty Guangfu Yongnian Handan China, which is specialized in the new Functional Materials application development the 517 Words  |  3 Pages Silicon Arts Inc Silicon Arts Inc. Silicon Arts Inc. (SAI) is a manufacturer of circuits that are used in a number of different electronic equipment (University of Phoenix, 1,314 Words  |  6 Pages Hebei Silicon Valley Chemical Co Company brief introduction Hebei Silicon Valley chemical Co., Ltd is situated to ounty Guangfu Yongnian Handan China, which is specialized in the new Functional Materials 515 Words  |  3 Pages Easily Made Silicon-Based Chemicals from Sand Word Count 504 Easily Made Silicon-based Chemicals from Sand I believe this new process of creating silicon-based chemicals from sand will revolutionize the industry 628 Words  |  3 Pages Similar Topics Silicon Arts Inc Get Access to 89,000+ Essays and Term Papers Join 209,000+ Other Students High Quality Essays and Documents Sign up © 2008–2020 EssaysForStudent.comFree Essays, Book Reports, Term Papers and Research Papers Essays Sign up Sign in Contact us Site Map Privacy Policy Terms of Service Facebook Twitter