Asked by Taasha
I am looking at the delta H chart to calculate delta H of reactions. When doing one reaction, I came across a species that was not included in the chart: SiO4. What do I do?
There is no SiO4. SiO2 perhaps, OR, you have been asked to calculate a theoretical molecule.
Oh, you are right, it is SiCl4, which is also not on my chart. So what should I do?
I have gaseous SiCl4 listed as -657.0 kJ/mol listed in one of my books for Delta H<sub>f</sub><sup>o</sup>
Oh, thanks! You must have a different book than I do. Thanks!
My number came from Whitten, Davis, Peck, 5th edition, General Chemistry, 1996. I also looked it up on the Internet using NIST tables. They show -662.
There is no SiO4. SiO2 perhaps, OR, you have been asked to calculate a theoretical molecule.
Oh, you are right, it is SiCl4, which is also not on my chart. So what should I do?
I have gaseous SiCl4 listed as -657.0 kJ/mol listed in one of my books for Delta H<sub>f</sub><sup>o</sup>
Oh, thanks! You must have a different book than I do. Thanks!
My number came from Whitten, Davis, Peck, 5th edition, General Chemistry, 1996. I also looked it up on the Internet using NIST tables. They show -662.