The thermal decomposition of dimethyl ether CH3OCH3 rightarrow CH4+CO + H2 or CH

Question

The thermal decomposition of dimethyl ether CH3OCH3 rightarrow CH4+CO + H2 or CH3OCH3 rightarrow CH4 + HCHO is postulated to occur by the following free radical chain mechanism: CH3OCH rightarrow k1 CH3+OCH3 CH3+CH3OCH3 rightarrow k2 CH4+CH2OCH3 CH2OCH3 rightarrow k3 CH3+HCHO CH3+CH2OCH3 rightarrow k4 C2H5OCH3 For a first-order initiation step, use the Goldfinger-Letort-Niclause table (1948) to predict the overall order of reaction. With the help of the steady-state assumption and the usual approximations of small initiation and termination coefficients, derive the detailed kinetic expression for the overall rate -d[CH3OCH3]/dt = k0[ch3OCH3]n and verify that the overall order n is as predicted in part (a). Also find k0 in terms of k1, k2, k3, and k4. If the activation energies of the individual steps are E1 = 325, E2 = 62.8, E3 = 159, E4 = 33.5 kJ/mol, show that the overall activation energy is E0 = 262 kJ/mol.

Explanation / Answer

https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CCwQFjAA&url=http%3A%2F%2Fpubs.acs.org%2Fdoi%2Fpdf%2F10.1021%2Fja01317a006&ei=jWPqUtOgAsezrges_oDYDw&usg=AFQjCNFsb0jHCbR-iqkCbuBMnjrftHDkHA&bvm=bv.60444564,d.bmk

I hope this pdf link may help. Sorry, but I dont know about Goldfinger-Letort-Niclause table.

Check the PDF. If it is of any help, I earnestly request you to Rate my answer. Thank You.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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