For the Formation of 1 Mol of Nitrosyl Chloride at a Given

Multiple Choice

For the formation of 1 mol of nitrosyl chloride at a given temperature,Δ_rH = -37 kJ/mol. NO(g) + ½ Cl₂(g) → NOCl(g)
The activation energy for this reaction is 81 kJ/mol.What is the activation energy for the reverse reaction?

A) 81 kJ/mol
B) 44 kJ/mol
C) 118 kJ/mol
D) -37 kJ/mol
E) -118 kJ/mol