For a reaction `A rarr B, E_(a)` for the forward reaction `E_(a(f))` and backward reaction `E_(a(b))` is `9kJ mol^(-1)` and `9kJ mol^(-1)`, respectively. Potential energy of `A` is `12 kJ mol^(-1)`. Calculate
(a) The heat of the reaction
(b) The threshold energy of reaction `(THE)`
( c) The potential energy of Products `(PE)`

Explanation

THE `= 19 + 12 = 31 kJ mol^(-1)`
`Delta H = 19-9 = 10kJ mol^(-1)`
`PE` of Product `= THE - E_(a)(b)`
`= 31 - 9 = 22kJ mol^(-1)`