If a reaction has ∆H = −125 kJ/mol and an activation energy of 72.8 kJ/mol, what is the activation energy for the reverse reaction?
a) −52.2 kJ/mol
b) 72.8 kJ/mol
c) 52.2 kJ/mol
d) 198 kJ/mol
e) 125 kJ/mol
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