The third step in converting SiO2 to Si is:
SiCl4 (g) + 2Mg(s) → 2MgCl2 (s) + Si(s) ΔH = -625.6 kJ.
What is the enthalpy change when 4.248 kg of silicon tetrachloride (MW = 169.9 g/mol) is converted to elemental silicon?
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Thermochemical Equation concept. You can view video lessons to learn Thermochemical Equation. Or if you need more Thermochemical Equation practice, you can also practice Thermochemical Equation practice problems.
What is the difficulty of this problem?
Our tutors rated the difficulty ofThe third step in converting SiO2 to Si is:SiCl4 (g) + 2Mg(...as high difficulty.
How long does this problem take to solve?
Our expert Chemistry tutor, Dasha took 3 minutes and 56 seconds to solve this problem. You can follow their steps in the video explanation above.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Sanders' class at QC CUNY .