For the decomposition of one mole of nitrosyl chloride, Delta H = 38kJ. NOCl(g)-->NO(g)+Cl2(g). The activation energy of this reaction is 100kJ. Calculate the activation energy for the reverse reaction in kJ. I attempted this question but cannot find the process or equation to finish the question. So far I have only been able to calculate the Delta H of the product and reaction. (NO + Cl2) - (NOCl) = (90.29 + 0) - (211.59) I cannot figure out where to go from here and do not even know if I am starting off right..HELP PLEASE!