Question

For a hypothetic reaction `ArarrB`, the activation energies for forward and backward reactions are 19 kJ/mole and 9 kJ/mole respectively. The heat of reaction is
A. 28 kJ
B. 19 kJ
C. 10 kJ
D. 9 kJ

Answer 1

Correct Answer - C
`DeltaH=E_(a)` for forward reaction `-E_(a)` for backward reaction = 19-9=10 kJ.