Lesson 6 - Enthalpy of Formation

Question 1

Standard molar enthalpy of formation

Answer 1

change in enthalpy when 1 mol of a compound is formed directly from its elements in their most stable SATP

Question 2

Thermal stability

Answer 2

Molecule’s ability to resist decomposition, the better able a molecule is to resist decomposition the more stable it is. A molecule with a large positive enthalpy of decomposition will require a larger amount of energy to be absorded in order for decomposition to occur.

Question 3

ΔHf=

Answer 3

ΔHf=-Enthalpy of decomposition

Question 4

ΔH°r=

Answer 4

ΔH°r={(nΔH°f,products)-{(nΔH°f,reactants)