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  3. 3 highly purified tetrachlorosilane sicl4 gas is reacted with hydrogen...

Question: 3 highly purified tetrachlorosilane sicl4 gas is reacted with hydrogen...

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3. Highly purified tetrachlorosilane (SiCl4) gas is reacted with hydrogen gas (H2) to produce electronic-grade polycrystalline silicon at 800oC and 1.5Γ—105 π‘ƒπ‘Ž according to the equation: 𝑆𝑖𝐢𝑙4(𝑔)+2𝐻2(𝑔)→𝑆𝑖(𝑠)+4𝐻𝐢𝑙 (𝑔) There are concerns that the reaction experiences diffusional limitations at the growing Si solid surface. Estimate the molecular diffusion coefficient for (a) SiCl4 in H2 and (b) SiCl4 in a gas phase mixture containing 40 mol% SiCl4, 40mol%H2, and 20 mol % HCl. The Lennard–Jones parameters for SiCl4 (species A) are πœ€π΄β„π‘˜ = 358 𝐾, 𝜎𝐴 = 5.08

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