Enthalpy of Reaction

1
Enthalpy of Reaction

• m/mt mass fraction of limiting reagent
• xo initial conversion (usually assumed to be
  zero)
• Cv mixture (sample) specific heat (cal/g-C)

2
Enthalpy

• Typically DHr is expressed in cal/gmol
• Values are 20 kcal/mol for most reactions

3
Calculating the F-factor

• Cs specific heat of sample
• Cb specific heat of bomb

4
Adiabatic Temperature Rise (ATR)

• ATR is the difference between the final and
  initial temperatures over the course of an
  exotherm, corrected for any imposed heating over
  all or part of the exotherm
• For the case of the RSST, the default method will
  have heating throughout the entire test including
  the exotherm

5
Adiabatic Temperature Rise

• if external heat is always on