The reaction A + B C + D occurs in one step.The activation energy is 132 kJ/mol and ΔE = -236 kJ/mol.What is the activation energy for the reverse reaction?

Question

Quizplus · Accepted Answer

The activation energy for the reverse reaction can be calculated using the relationship:

ΔE(reverse) = ΔE(forward)
- Ea(reverse) + Ea(forward)
where
ΔE(forward) = -236 kJ/mol (given)
Ea(forward) = 132 kJ/mol (given)

Substituting the values, we get:

ΔE(reverse) = -236 kJ/mol
- Ea(reverse) + 132 kJ/mol

Solving for Ea(reverse), we get:

Ea(reverse) = 132 kJ/mol - 236 kJ/mol = -104 kJ/mol

Therefore, the answer is B, -104.

The Reaction a + B C + D Occurs in One