This preview shows page 1. Sign up to view the full content.
Unformatted text preview: rature. A= 1 C= D= E= 50 500 5000
energy transition transition state theory (Ch 6) Hammond Hammond Postulate
Δ Δ H* = 21 kJ/mol C H Cl C H−Cl Δ Δ H° = 21 kJ/mol A= B= C= D= E= 1 5 50 500 5000
2 Keq = ?
Keq = 10∆G°/-2.3RT ∆G° ≈ ∆H° = -21 kJ/mol Keq = 1021/5.7 = 4833 if ∆G° = 5.7 kJ/mol then Keq = 101 B= 5 reaction Why is the reaction rate difference only a factor of 5 ?
CH3 H3C C CH3 CH3 H3C C H2C H+ H H+ 400 kJ/mol
Cl H3C CH3 C CH3 432 kJ/mol
Cl For a reactivity ratio of 5/1 what is the approximate ∆ ∆ H*?
CH3 H3C C CH3 H+ 400 kJ/mol
Cl H3C +H ∆H° = -32 kJ/mol CH3 C CH3 432 kJ/mol
Cl +H ∆H° = -32 kJ/mol 421 kJ/mol
Cl H3C CH3 432 kJ/mol C H2C H +H Cl ∆H° = -11 kJ/mol CH3 H3C C H2C H+ H 421 kJ/mol
Cl H3C CH3 432 kJ/mol C H2C H +H Cl ∆H° = -11 kJ/mol C...
View Full Document
This note was uploaded on 12/05/2010 for the course CHE 321 taught by Professor Fowler/sampson during the Fall '08 term at SUNY Stony Brook.
- Fall '08