High-purity silicon is obtained using a three-step process. The first step invol

Question

High-purity silicon is obtained using a three-step process. The first step involves heating solid silicon dioxide,Sio2 , with solid carbon to give solid silicon and carbon monoxide gas. In the second step, solid silicon is converted into liquid silicon tetrachloride,SiCl4 , by treating it with chlorine gas. In the last step, is SiCl4 treated with hydrogen gas to give ultrapure solid silicon and hydrogen chloride

Calculate the masses of carbon, chlorine, and hydrogen required per kilogram of silicon.

>:( ! ?

Explanation / Answer

helpfull Balanced Equations: (1)SiO2 + 2C = Si + 2CO (2) Si + 2 Cl2 = SiCl4 (3) SiCl4 + 2 H2 = Si + 4 HCl For 1 moli Si, 2 moles C = 24g, 2 moles Cl2 = 142g and 2moles H2 = 4g is required . 1kg Si = 1000/28 = 35.71 moles so, amount of c required = 24*35.71 = .857 kg amount of Cl2 = 5.07 kg amount of H2 = .142 kg.

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.